John Chow, M.D.
NPI 1215984513 · Legal Medicine · San Mateo, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Chow, M.D. is a Legal Medicine provider in San Mateo, CA (NPI 1215984513).
Provider details
- NPI number
- 1215984513
- Entity type
- Individual
- Primary specialty
- Legal MedicineOther Service Providers
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- G75391 (CA)
Specialties & taxonomies
Other Service Providers
Other Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
2,643 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 1,234 | $153 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 501 | $156 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 266 | $109 |
| Chronic Care Management Services, First 20 Minutes of Clinical Staff Time Directed By Health Care Professional, Per Calendar Month99490 | 148 | $74 |
| Administration of Influenza Virus VaccineG0008 | 137 | $39 |
| Telephone Medical Discussion With Physician, 11-20 Minutes99442 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 140 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 1,121 | 308 |
| Amlodipine Besylate | 978 | 263 |
| Losartan Potassium | 682 | 187 |
| Levothyroxine Sodium | 550 | 140 |
| Metformin Hcl | 324 | 89 |
| Simvastatin | 324 | 87 |
| Metoprolol Succinate |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$42 across 2 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-05-30
- Last updated
- 2012-05-31
Frequently asked questions
- What is John Chow's NPI number?
- John Chow's National Provider Identifier (NPI) is 1215984513, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Chow's specialty?
- John Chow is listed in the NPPES registry with a primary specialty of Legal Medicine (Other Service Providers).
- Where is John Chow located?
- John Chow's practice location on file with NPPES is 101 S San Mateo Drive, San Mateo, CA 94401.
- What is John Chow's phone number?
- The practice phone number listed in the NPPES registry for John Chow is (650) 347-0063.
- Does John Chow accept Medicare?
- John Chow is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Chow's NPI active?
- Yes — John Chow's NPI (1215984513) is active in the NPPES registry as of the last update on 2012-05-31.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.