Cynthia Lin, MD
NPI 1528295284 · Internal Medicine Physician · San Francisco, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Cynthia Lin, MD is a Internal Medicine Physician provider in San Francisco, CA (NPI 1528295284).
Provider details
- NPI number
- 1528295284
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- A141268 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
17 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
294 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 93 | $120 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 81 | $80 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 75 | $118 |
| Critical Care, First 30-74 Minutes99291 | 27 | $209 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 18 | $175 |
Typical Medicare-allowed amounts for these services range $80–$209 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 25 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Pantoprazole Sodium | 60 | 41 |
| Atorvastatin Calcium | 59 | 22 |
| Enoxaparin Sodium | 37 | — |
| Prednisone | 33 | 24 |
| Latanoprost | 33 | — |
| Tamsulosin Hcl | 30 | — |
| Amlodipine Besylate | 27 | 15 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$258 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
- 2009-06-19
- Last updated
- 2018-04-02
Frequently asked questions
- What is Cynthia Lin's NPI number?
- Cynthia Lin's National Provider Identifier (NPI) is 1528295284, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Cynthia Lin's specialty?
- Cynthia Lin is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Cynthia Lin located?
- Cynthia Lin's practice location on file with NPPES is 845 Jackson St, San Francisco, CA 94133-4899.
- What is Cynthia Lin's phone number?
- The practice phone number listed in the NPPES registry for Cynthia Lin is (415) 982-2400.
- Does Cynthia Lin accept Medicare?
- Cynthia Lin is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Cynthia Lin's NPI active?
- Yes — Cynthia Lin's NPI (1528295284) is active in the NPPES registry as of the last update on 2018-04-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.