Margaret Threadgill, MD,MBA
NPI 1548610421 · Internal Medicine Physician · Boston, MA
Enrolled with Medicare as Practitioner - Hospitalist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Margaret Threadgill, MD,MBA is a Internal Medicine Physician provider in Boston, MA (NPI 1548610421).
Provider details
- NPI number
- 1548610421
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD,MBA
- Sex
- Female
- Sole proprietor
- No
- License
- 282509 (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
10 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
189 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 68 | $82 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 44 | $138 |
| Assessment of Emotional Or Behavioral Problems96127 | 17 | $5 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 16 | $196 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 16 | $141 |
| Admn Sarscov2 Vacc 1 Dose90480 | 15 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 15 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 52 | 13 |
| Amlodipine Besylate | 31 | — |
| Omeprazole | 25 | — |
| Metoprolol Succinate | 23 | — |
| Levothyroxine Sodium | 23 | — |
| Lisinopril | 20 | — |
| Fluticasone Propionate |
Practice location
Mailing address
Registry dates
- Enumerated
- 2016-06-21
- Last updated
- 2020-06-05
- Certified
- 2020-06-05
Frequently asked questions
- What is Margaret Threadgill's NPI number?
- Margaret Threadgill's National Provider Identifier (NPI) is 1548610421, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Margaret Threadgill's specialty?
- Margaret Threadgill is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Margaret Threadgill located?
- Margaret Threadgill's practice location on file with NPPES is Massachusetts General Hospital, Boston, MA 02114.
- What is Margaret Threadgill's phone number?
- The practice phone number listed in the NPPES registry for Margaret Threadgill is (617) 726-7782.
- Does Margaret Threadgill accept Medicare?
- Margaret Threadgill is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Margaret Threadgill's NPI active?
- Yes — Margaret Threadgill's NPI (1548610421) is active in the NPPES registry as of the last update on 2020-06-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.