Physician Profile
Douglas D. Zhang, M.D.
Unclaimed ProfileAbout Dr. Zhang
Douglas D. Zhang, M.D. is a healthcare provider in San Leandro, CA specializing in family medicine — geriatric medicine. Douglas trained at Texas Tech University Health Science Center School of Medicine, graduating in 1994. Medicare claims data shows Douglas provided 5,524 services to 2,443 patients. The services billed most often include established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more, telephone medical discussion with physician, 11-20 minutes, and chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it — free, and no identity document with a practice or institutional email.
Education & Training
Specialty
Credentials & Licensing
License numbers are what the provider reported to NPPES when the NPI was issued or updated. NPPES does not verify licensure; confirm current standing with the state licensing board.
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (510) 351-2100
- Email not available
Practice Locations
13851 E 14TH ST
San Leandro, CA 94578
Conditions Commonly Evaluated or Treated
Within Family Medicine — Geriatric Medicine generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Conditions
Most searched conditions
- Alzheimer's disease
- Dementia
- Frequent falls
- Managing multiple medications
- Memory loss
- Osteoporosis
Back & spine
- Spinal stenosis
Blood & Immunity
- Iron-deficiency anemia
Bones & joints
- Chronic knee pain
- Hip fracture recovery
Brain & memory
- Mild cognitive impairment
Brain & nerves
- Stroke Aftercare
Brain & Nervous System
- Delirium
- Dementia with behavioral symptoms
- Essential tremor
- Parkinson's disease
- Peripheral neuropathy
Circulation & balance
- Fainting and syncope
Digestive health
- Acid reflux
Digestive Health
- Constipation
- Fecal incontinence
- Swallowing difficulties
Ear, Nose & Throat
- Dry mouth
- Hearing loss
Endocrine & Metabolic
- Diabetes
Eye health
- Cataracts
- Macular degeneration
Foot care
- Foot fungus
General Health
- Severe dehydration
- Unexplained Weight Loss
Heart & Circulation
- Congestive heart failure
- High blood pressure
- High cholesterol
- Poor Circulation
- Poor Circulation and Swollen Legs
Heart health
- AFib
Hormones & thyroid
- Underactive Thyroid
Infections
- Shingles
Joints & Bones
- Gout
- Osteoarthritis
Kidney & Urinary
- Chronic kidney disease
Lung health
- COPD
Men's health
- Enlarged prostate
Mental Health
- Senior Depression
Mobility & Balance
- Balance Problems and Fall Risk
- Muscle Loss And Weakness
Nutrition & digestion
- Poor Appetite In Seniors
Skin
- Bedsores
Skin health
- Adult diaper rash
- Age spots and sun spots
- Thinning and Tearing Skin
Sleep
Sleep & nerves
- Restless legs syndrome
Urinary & Bladder
- Recurrent urinary tract infections
- Urinary incontinence in women
Procedures & services
Most searched procedures
- Comprehensive geriatric assessment
- Fall risk assessment
- Memory testing
Bladder & bowel
- Incontinence supplies assessment
Brain & memory
- Cognitive impairment screening
Cancer screening
- Colon cancer screening consult
- Prostate exam
Caregiver support
- Respite care planning
Diagnostic Testing
- Blood Pressure Check
- Diabetes Screening and A1C Test
Ear, Nose & Throat
- Earwax removal
- Hearing test
Foot Care
- Senior foot and toenail care
Heart health
- EKG
Home Care
- Home Doctor Visit
- Home safety check
Home care
- Home Health Care Referral
Injections & Medications
- Vitamin B12 Injections
Lab tests
- Cholesterol screening
- Thyroid Blood Test
Lung health
- Breathing Treatment
Medications
- Deprescribing consultation
Mental Health
- Senior Depression Screening
Mobility & Balance
- Assistive walking device fitting
- Balance and gait physical therapy
Mobility & independence
- Walker and Wheelchair Prescription
Nutrition
- Senior nutrition counseling
Pain management
- Chronic pain management consultation
Pain Management
- Joint injection or aspiration
Palliative & End of Life
- Hospice care consultation
- Palliative cancer care
Preventive Care
- Medicare annual wellness visit
- Telehealth visit for seniors
Screening & Imaging
- Barium Swallow Study
- Bone Density Scan Referral
Senior care evaluations
- Nursing Home Admission Exam
Senior Care Planning
- Advance Care Planning
- Assisted Living Placement Assessment
- Caregiver Counseling
- Senior Driving Safety Assessment
Skin
- Bedsore and Wound Dressing
Therapy & rehab
- Occupational therapy home assessment
- Physical Therapy Evaluation
- Speech and swallowing therapy
Urinary & Bladder
- Bladder control training
- Urinary catheter insertion
Vaccines
- COVID-19 Booster
- Flu shot for seniors
- Pneumonia shot
- Routine Vaccines
- RSV vaccine
Wound care
- Skin Tear Treatment
Procedures Most Often Billed to Medicare
5,524 services · 2,443 patients · 19 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Removal of impacted ear wax | Procedure | 69210 |
17 | Too few peers to compare |
| Influenza vaccine split virus, preservative free | Treatment | 90662 |
75 | More often than most peers in Family Medicine — Geriatric… |
| Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report | Treatment | 93000 |
53 | More often than most peers in Family Medicine — Geriatric… |
| Injection, dexamethasone sodium phosphate, 1 mg | Drug given | J1100 |
27 | Too few peers to compare |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
1,575 | More than most peers in Family Medicine — Geriatric… |
| Telephone medical discussion with physician, 11-20 minutes | Office visit | 99442 |
870 | More than most peers in Family Medicine — Geriatric… |
| Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month | Office visit | 99490 |
778 | More often than most peers in Family Medicine — Geriatric… |
| Remote monitoring of physiologic parameters, initial supply of devices with daily recordings or programmed alerts transmission, each 30 days | Office visit | 99454 |
679 | Too few peers to compare |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
543 | More than most peers in Family Medicine — Geriatric… |
| Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | Billing code | G0439 |
193 | More often than most peers in Family Medicine — Geriatric… |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other family doctors at this location 1
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 8
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
More connections — 18 related providers in 3 groups
Trained at Texas Tech University Health Science Center School of Medicine 3
Other providers in the same specialty who trained at the same institution.
Class of 1994 at Texas Tech University Health Science Center School of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Removal of impacted ear wax 7
Providers in CA who bill this service to Medicare most often.
Common questions
What does Douglas D. Zhang specialize in?
Douglas D. Zhang is a family doctor in San Leandro, CA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Family Medicine — Geriatric Medicine”.
NPI registry
Where is Douglas D. Zhang located?
Douglas D. Zhang is listed at 13851 E 14Th St, San Leandro, CA 94578. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Douglas D. Zhang's phone number?
The number on file is (510) 351-2100. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Douglas D. Zhang?
Douglas D. Zhang's National Provider Identifier is 1023074341. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Douglas D. Zhang train?
Douglas D. Zhang attended Texas Tech University Health Science Center School of Medicine, graduating in 1994. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Douglas D. Zhang have?
Douglas D. Zhang has 32 years experience. Calculated from a graduation year of 1994, reported in the CMS National Downloadable File.
CMS public data
What does Douglas D. Zhang do most often?
According to Medicare billing data, Douglas D. Zhang performs procedures including removal of impacted ear wax; provides treatments such as influenza vaccine split virus, preservative free and routine electrocardiogram using at least 12 leads with interpretation and report, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Douglas D. Zhang's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Douglas D. Zhang. If this is you, claiming it is free.
Guide.md
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.