Jonathan Siglin, MD
NPI 1710563747 · Hospitalist Physician · Boston, MA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jonathan Siglin, MD is a Hospitalist Physician provider in Boston, MA (NPI 1710563747).
Provider details
- NPI number
- 1710563747
- Entity type
- Individual
- Primary specialty
- Hospitalist PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- 1017946 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
5 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
3 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
221 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 50 Minutes99233 | 167 | $124 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 40 | $121 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 14 | $181 |
Typical Medicare-allowed amounts for these services range $121–$181 (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 · 4 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Atorvastatin Calcium | 19 |
| Metformin Hcl | 11 |
| Omeprazole | 11 |
| Oxycodone Hcl | 11 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Additional practice locations (2)
- 55 Fruit StBoston, MA 02114-2696Phone: (617) 726-2000
- 600 N Wolfe StBaltimore, MD 21287-0005Phone: (410) 955-5000
Registry dates
- Enumerated
- 2021-03-21
- Last updated
- 2026-01-12
- Certified
- 2026-01-12
Frequently asked questions
- What is Jonathan Siglin's NPI number?
- Jonathan Siglin's National Provider Identifier (NPI) is 1710563747, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jonathan Siglin's specialty?
- Jonathan Siglin is listed in the NPPES registry with a primary specialty of Hospitalist Physician (Allopathic & Osteopathic Physicians).
- Where is Jonathan Siglin located?
- Jonathan Siglin's practice location on file with NPPES is 330 Brookline Ave, Boston, MA 02215-5400.
- What is Jonathan Siglin's phone number?
- The practice phone number listed in the NPPES registry for Jonathan Siglin is (617) 754-4677.
- Does Jonathan Siglin accept Medicare?
- Jonathan Siglin is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jonathan Siglin's NPI active?
- Yes — Jonathan Siglin's NPI (1710563747) is active in the NPPES registry as of the last update on 2026-01-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.