Michael Hamrock, MD
NPI 1538156880 · Internal Medicine Physician · West Roxbury, MA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Michael Hamrock, MD is a Internal Medicine Physician provider in West Roxbury, MA (NPI 1538156880).
Provider details
- NPI number
- 1538156880
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 153780 (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
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
3 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
222 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 | 83 | $114 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 78 | $65 |
| Telephone Medical Discussion With Physician, 11-20 Minutes99442 | 49 | $94 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 12 | $141 |
Typical Medicare-allowed amounts for these services range $65–$141 (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 · 14 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Buprenorphine Hcl/Naloxone Hclbrand: Buprenorphine-Naloxone | 353 | 21 |
| Atorvastatin Calcium | 39 | — |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 31 | — |
| Quetiapine Fumarate | 28 | — |
| Fluticasone Propionate | 20 | — |
| Lisinopril | 19 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$76 across 3 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
Additional practice locations (2)
- Semc - Addiction Medicine - Mat Clinic736 Cambridge St, 6th FlBri, MA 02135Phone: (617) 562-5378
- Semc - Outpatient Psychiatry Departmen2100 Dorchester Ave Suite 101Dorchester, MA 02124Phone: (617) 562-5378
Registry dates
- Enumerated
- 2005-10-03
- Last updated
- 2025-03-11
- Certified
- 2025-03-09
Frequently asked questions
- What is Michael Hamrock's NPI number?
- Michael Hamrock's National Provider Identifier (NPI) is 1538156880, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michael Hamrock's specialty?
- Michael Hamrock is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Michael Hamrock located?
- Michael Hamrock's practice location on file with NPPES is 2020 Centre St, West Roxbury, MA 02132-3316.
- What is Michael Hamrock's phone number?
- The practice phone number listed in the NPPES registry for Michael Hamrock is (617) 327-0700.
- Does Michael Hamrock accept Medicare?
- Michael Hamrock is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Michael Hamrock's NPI active?
- Yes — Michael Hamrock's NPI (1538156880) is active in the NPPES registry as of the last update on 2025-03-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.