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- 20400 Lake Chabot Rd Ste 301, Castro Valley, CA 94546
About Mark Zeme
Mark Zeme, M. D. practices otolaryngology (ent) in Castro Valley, CA. Mark is a 1987 graduate of University of Michigan Medical School. According to Medicare claims data, Mark cared for 742 Medicare patients across 856 services. The services billed most often include exam of ear using a microscope, established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more, and comprehensive hearing test. The provider's National Provider Identifier (NPI) is 1669400388.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
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) 889-6673
- Email not available
Practice Locations
20400 LAKE CHABOT RD STE 301
Castro Valley, CA 94546
Conditions Commonly Evaluated or Treated
Within Otolaryngology 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
- Ear infection
- Sinus infection
- Sleep apnea
- Tinnitus
- Tonsillitis
- Vertigo
Balance
Ear and hearing
- Cholesteatoma
- Eustachian tube dysfunction
- Hearing loss
- Otosclerosis
- Perforated eardrum
- Swimmer's ear
Head, neck, and salivary
- Hyperparathyroidism
- Neck mass
- Parotid gland tumor
- Salivary gland infection
- Thyroid cancer
Nose and sinus
- Broken nose
- Deviated septum
- Loss or reduction of smell
- Nasal obstruction
- Nasal polyps
- Nosebleeds
- Seasonal allergies
Sleep and airway
Throat and voice
- Enlarged adenoids
- Globus sensation
- Hoarseness and voice change
- Laryngopharyngeal reflux
- Swallowing difficulties
- Vocal cord nodules
- Vocal cord paralysis
Cancer
- Laryngeal cancer
- Oral cavity cancer
- Skin cancer of the head and neck
Head & Neck
Throat & Voice
- Frequent Strep Throat
Procedures & services
Most searched procedures
- Adenoidectomy
- Ear tube surgery
- Hearing test
- Sinus surgery
- Tonsillectomy
Office diagnosis
- Fine-needle aspiration of a neck mass
- Flexible laryngoscopy
- Nasal endoscopy
Cosmetic
- Earlobe Repair
Ear & Hearing
- Bone-Anchored Hearing Aid Surgery
- Eustachian Tube Balloon Dilation
Ear procedures
- Cochlear implant surgery
- Eardrum repair
- Earwax removal
- Mastoid surgery
- Stapes surgery
Head & Neck
- Neck Lump Removal
- Salivary Duct Stone Removal
- Thyroid Nodule Biopsy
Head and neck surgery
- Neck lymph-node dissection
- Parathyroid surgery
- Parotid gland surgery
- Thyroid removal surgery
- Voice-box removal
Nose & Sinus
- Broken Nose Repair
Nose and sinus procedures
- Nasal cautery for nosebleeds
- Nasal-polyp removal
- Rhinoplasty
- Septoplasty
- Turbinate reduction
Sleep and airway
- Drug-induced sleep endoscopy
- Hypoglossal nerve stimulator implantation
- Uvulopalatopharyngoplasty
Throat & Voice
Throat, voice, and swallowing
- Esophageal dilation
- Microlaryngoscopy
- Vocal-fold injection
Procedures Most Often Billed to Medicare
856 services · 742 patients · 10 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Diagnostic exam of nasal passages using an endoscope | Procedure | 31231 |
72 | As often as other peers in Otolaryngology (ENT) |
| Diagnostic exam of voice box using a flexible endoscope | Procedure | 31575 |
34 | Less often than most peers in Otolaryngology (ENT) |
| Exam of ear using a microscope | Treatment | 92504 |
169 | More often than most peers in Otolaryngology (ENT) |
| Comprehensive hearing test | Treatment | 92570 |
126 | More often than most peers in Otolaryngology (ENT) |
| Test for hearing various pitches using earphone and device placed against the bone | Treatment | 92553 |
104 | More than most peers in Otolaryngology (ENT) |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
135 | As often as other peers in Otolaryngology (ENT) |
| New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more | Office visit | 99203 |
104 | More often than most peers in Otolaryngology (ENT) |
| Removal of impacted cerumen (one or both ears) by physician on same date of service as audiologic function testing | Billing code | G0268 |
46 | As often as other peers in Otolaryngology (ENT) |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
42 | Less often than most peers in Otolaryngology (ENT) |
| New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more | Office visit | 99204 |
24 | Less often than most peers in Otolaryngology (ENT) |
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.
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.
Other otolaryngology specialists in Castro Valley 5
Same specialty, same city.
Trained at University of Michigan Medical School 8
Other providers in the same specialty who trained at the same institution.
More connections — 16 related providers in 2 groups
Class of 1987 at University of Michigan Medical School 8
Providers who graduated from the same medical school in the same year.
Also performs Diagnostic exam of nasal passages using an endoscope 8
Providers in CA who bill this service to Medicare most often.
Common questions
What is Mark Zeme's specialty?
Mark Zeme is an otolaryngology (ent) in Castro Valley, CA. That is the designation recorded for this NPI in the federal registry.
NPI registry
Where can I find Mark Zeme?
Mark Zeme is listed at 20400 Lake Chabot Rd Ste 301, Castro Valley, CA 94546. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Mark Zeme?
The number on file is (510) 889-6673. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Mark Zeme's NPI number?
Mark Zeme's National Provider Identifier is 1669400388. 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
What is Mark Zeme's education?
Mark Zeme attended University of Michigan Medical School, graduating in 1987. This comes from the CMS National Downloadable File.
CMS public data
How long has Mark Zeme been practicing?
Mark Zeme has 39 years experience. Calculated from a graduation year of 1987, reported in the CMS National Downloadable File.
CMS public data
What is Mark Zeme known for?
According to Medicare billing data, Mark Zeme performs procedures including diagnostic exam of nasal passages using an endoscope and diagnostic exam of voice box using a flexible endoscope; provides treatments such as exam of ear using a microscope and comprehensive hearing test, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Mark Zeme confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Mark Zeme. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.