Yan Tan, M.D.
NPI 1275819179 · Internal Medicine Physician · Quincy, MA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Yan Tan, M.D. is a Internal Medicine Physician provider in Quincy, MA (NPI 1275819179).
Provider details
- NPI number
- 1275819179
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- 252539 (MA)
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
14 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
265 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 | 87 | $136 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 51 | $9 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 41 | $80 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 18 | $141 |
| Annual Alcohol Misuse Screening, 5 to 15 MinutesG0442 | 18 | $21 |
| Annual Depression Screening, 5 to 15 MinutesG0444 | 18 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 57 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 199 | 56 |
| Levothyroxine Sodium | 102 | 23 |
| Metoprolol Succinate | 92 | 25 |
| Lisinopril | 75 | 19 |
| Trazodone Hcl | 66 | 13 |
| Metformin Hcl | 66 | 20 |
| Alendronate Sodium | 66 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$113 across 6 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
- 2011-10-24
- Last updated
- 2018-07-26
Frequently asked questions
- What is Yan Tan's NPI number?
- Yan Tan's National Provider Identifier (NPI) is 1275819179, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Yan Tan's specialty?
- Yan Tan is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Yan Tan located?
- Yan Tan's practice location on file with NPPES is 40 Willard St Ste 103, Quincy, MA 02169.
- What is Yan Tan's phone number?
- The practice phone number listed in the NPPES registry for Yan Tan is (617) 481-1771.
- Does Yan Tan accept Medicare?
- Yan Tan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Yan Tan's NPI active?
- Yes — Yan Tan's NPI (1275819179) is active in the NPPES registry as of the last update on 2018-07-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.