John Chisholm, D.O.
NPI 1639291792 · Internal Medicine Physician · Norwood, MA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Chisholm, D.O. is a Internal Medicine Physician provider in Norwood, MA (NPI 1639291792).
Provider details
- NPI number
- 1639291792
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- Sole proprietor
- No
- License
- 258526 (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
19 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
1,699 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) |
|---|---|---|
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 313 | $9 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 196 | $93 |
| Hemoglobin A1c Level83036 | 152 | $10 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 124 | $76 |
| Blood Test, Lipids (cholesterol and Triglycerides)80061 | 118 | $13 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 103 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 81 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 325 | 100 |
| Amlodipine Besylate | 195 | 63 |
| Metoprolol Succinate | 169 | 51 |
| Omeprazole | 151 | 49 |
| Lisinopril | 141 | 41 |
| Levothyroxine Sodium | 101 | 28 |
| Simvastatin | 96 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-04-06
- Last updated
- 2021-01-07
- Certified
- 2021-01-07
Frequently asked questions
- What is John Chisholm's NPI number?
- John Chisholm's National Provider Identifier (NPI) is 1639291792, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Chisholm's specialty?
- John Chisholm is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is John Chisholm located?
- John Chisholm's practice location on file with NPPES is 1177 Boston Providence Tpke, Norwood, MA 02062-5019.
- What is John Chisholm's phone number?
- The practice phone number listed in the NPPES registry for John Chisholm is (781) 278-5540.
- Does John Chisholm accept Medicare?
- John Chisholm is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Chisholm's NPI active?
- Yes — John Chisholm's NPI (1639291792) is active in the NPPES registry as of the last update on 2021-01-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.