Tung Phan, MD
NPI 1699271429 · Internal Medicine Physician · Worcester, MA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Tung Phan, MD is a Internal Medicine Physician provider in Worcester, MA (NPI 1699271429).
Provider details
- NPI number
- 1699271429
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 1014416 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
8 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
155 Medicare services, 2024 (ranked within specialty)
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 methodology.
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 Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 61 | $65 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 38 | $78 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 30 | $128 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 14 | $90 |
| Psychiatric Diagnostic Evaluation With Medical Services90792 | 12 | $194 |
Typical Medicare-allowed amounts for these services range $65–$194 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, 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 · 34 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Quetiapine Fumarate | 84 | — |
| Trazodone Hcl | 82 | 18 |
| Fluoxetine Hcl | 45 | — |
| Mirtazapine | 43 | — |
| Bupropion Hclbrand: Bupropion Xl | 41 | — |
| Sertraline Hcl | 40 | — |
| Olanzapine | 40 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2018-04-02
- Last updated
- 2023-07-18
- Certified
- 2023-07-18
Frequently asked questions
- What is Tung Phan's NPI number?
- Tung Phan's National Provider Identifier (NPI) is 1699271429, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Tung Phan's specialty?
- Tung Phan is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Tung Phan located?
- Tung Phan's practice location on file with NPPES is 55 Lake Ave N, Worcester, MA 01655-0002.
- What is Tung Phan's phone number?
- The practice phone number listed in the NPPES registry for Tung Phan is (508) 334-2731.
- Does Tung Phan accept Medicare?
- Tung Phan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Tung Phan's NPI active?
- Yes — Tung Phan's NPI (1699271429) is active in the NPPES registry as of the last update on 2023-07-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.