Gregory Ruhnke, M.D.
NPI 1679541395 · Internal Medicine Physician · Boston, MA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gregory Ruhnke, M.D. is a Internal Medicine Physician provider in Boston, MA (NPI 1679541395).
Provider details
- NPI number
- 1679541395
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 210234 (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
20 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
243 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 | 139 | $128 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 71 | $142 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 33 | $125 |
Typical Medicare-allowed amounts for these services range $125–$142 (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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-03-09
- Last updated
- 2008-09-02
Frequently asked questions
- What is Gregory Ruhnke's NPI number?
- Gregory Ruhnke's National Provider Identifier (NPI) is 1679541395, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Ruhnke's specialty?
- Gregory Ruhnke is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Gregory Ruhnke located?
- Gregory Ruhnke's practice location on file with NPPES is 15 Parkman Street Wac 108, Boston, MA 02114-3117.
- What is Gregory Ruhnke's phone number?
- The practice phone number listed in the NPPES registry for Gregory Ruhnke is (617) 726-2707.
- Does Gregory Ruhnke accept Medicare?
- Gregory Ruhnke is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gregory Ruhnke's NPI active?
- Yes — Gregory Ruhnke's NPI (1679541395) is active in the NPPES registry as of the last update on 2008-09-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.