Physician Profile
Carlos C. Marrero, MD
Unclaimed ProfileAbout Dr. Marrero
Carlos C. Marrero, MD practices family medicine — geriatric medicine in San Juan, PR. According to Medicare claims data, Carlos cared for 110 Medicare patients across 375 services. The services billed most often include established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more, established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more, and diagnostic exam of voice box using an endoscope with mirror.
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
- (787) 274-0277
- Email not available
Practice Locations
CESAR GONZALEZ #463 URB ROOSEVELT
San Juan, PR 00918
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
Bones & joints
- Chronic knee pain
- Hip fracture recovery
Brain & memory
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
Digestive Health
Ear, Nose & Throat
- Dry mouth
- Hearing loss
Endocrine & Metabolic
Eye health
Foot care
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
Hormones & thyroid
- Underactive Thyroid
Infections
Joints & Bones
- Gout
- Osteoarthritis
Kidney & Urinary
Lung health
Men's health
Mental Health
- Senior Depression
Mobility & Balance
- Balance Problems and Fall Risk
- Muscle Loss And Weakness
Nutrition & digestion
- Poor Appetite In Seniors
Skin
Skin health
- Adult diaper rash
- Age spots and sun spots
- Thinning and Tearing Skin
Sleep
- Insomnia and Sleep Problems
Sleep & nerves
- Restless legs syndrome
Urinary & Bladder
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
Caregiver support
- Respite care planning
Diagnostic Testing
Ear, Nose & Throat
- Earwax removal
- Hearing test
Foot Care
- Senior foot and toenail care
Heart health
Home Care
- Home Doctor Visit
- Home safety check
Home care
- Home Health Care Referral
Injections & Medications
Lab tests
- Cholesterol screening
- Thyroid Blood Test
Lung health
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
375 services · 110 patients · 4 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Diagnostic exam of voice box using an endoscope with mirror | Procedure | 31505 |
22 | Too few peers to compare |
| Test to measure expiratory airflow and volume | Treatment | 94010 |
14 | Too few peers to compare |
| Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more | Office visit | 99215 |
280 | More than most peers in Family Medicine — Geriatric… |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
59 | Less 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.
Also at this address 1
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Other family doctors in San Juan 8
Same specialty, same city.
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
More connections — 9 related providers in 2 groups
Class of 1982 at Other 8
Providers who graduated from the same medical school in the same year.
Also performs Diagnostic exam of voice box using an endoscope with mirror 1
Providers in PR who bill this service to Medicare most often.
Common questions
What is Dr. Marrero's specialty?
Dr. Marrero is a family doctor in San Juan, PR. That is the designation recorded for this NPI in the federal registry, where it is listed as “Family Medicine — Geriatric Medicine”.
NPI registry
Where can I find Dr. Marrero?
Dr. Marrero is listed at Cesar Gonzalez #463 Urb Roosevelt, San Juan, PR 00918. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Dr. Marrero?
The number on file is (787) 274-0277. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Marrero's NPI number?
Dr. Marrero's National Provider Identifier is 1083774228. 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 Dr. Marrero's medical education?
Dr. Marrero attended Other, graduating in 1982. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Marrero been practicing?
Dr. Marrero has 44 years experience. Calculated from a graduation year of 1982, reported in the CMS National Downloadable File.
CMS public data
What is Dr. Marrero known for?
According to Medicare billing data, Dr. Marrero performs procedures including diagnostic exam of voice box using an endoscope with mirror; provides treatments such as test to measure expiratory airflow and volume, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Marrero confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Marrero. 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.