Tammy Hshieh, M.D.
NPI 1477780443 · Internal Medicine Physician · Boston, MA
Enrolled with Medicare as Practitioner - Geriatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Tammy Hshieh, M.D. is a Internal Medicine Physician provider in Boston, MA (NPI 1477780443).
Provider details
- NPI number
- 1477780443
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- 241538 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
17 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
613 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 Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 283 | $102 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 101 | $180 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 88 | $81 |
| Telephone Medical Discussion With Physician, 21-30 Minutes99443 | 56 | $102 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 | 51 | $190 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 27 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Mirtazapine | 53 | 22 |
| Levothyroxine Sodium | 48 | — |
| Escitalopram Oxalate | 43 | 13 |
| Trazodone Hcl | 41 | 19 |
| Citalopram Hydrobromidebrand: Citalopram Hbr | 27 | — |
| Omega-3 Acid Ethyl Esters | 25 | — |
| Donepezil Hcl |
Practice location
Mailing address
Registry dates
- Enumerated
- 2009-06-17
- Last updated
- 2009-06-17
Frequently asked questions
- What is Tammy Hshieh's NPI number?
- Tammy Hshieh's National Provider Identifier (NPI) is 1477780443, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Tammy Hshieh's specialty?
- Tammy Hshieh is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Tammy Hshieh located?
- Tammy Hshieh's practice location on file with NPPES is 330 Brookline Ave, Boston, MA 02215-5400.
- What is Tammy Hshieh's phone number?
- The practice phone number listed in the NPPES registry for Tammy Hshieh is (617) 632-8266.
- Does Tammy Hshieh accept Medicare?
- Tammy Hshieh is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Tammy Hshieh's NPI active?
- Yes — Tammy Hshieh's NPI (1477780443) is active in the NPPES registry as of the last update on 2009-06-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.