John Cosgrove, D.O.
NPI 1669638425 · Family Medicine Physician · Hammond, IN
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Cosgrove, D.O. is a Family Medicine Physician provider in Hammond, IN (NPI 1669638425).
Provider details
- NPI number
- 1669638425
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- Sole proprietor
- No
- License
- 2003551 (IN)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
17 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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 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 | 21 |
| Oxcarbazepine | 14 |
| Amlodipine Besylate | 13 |
| Clonazepam | 13 |
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 (1)
- 1276 N Clybourn AveChicago, IL 60610-2003Phone: (312) 337-1073Fax: (312) 337-7616
Registry dates
- Enumerated
- 2008-07-31
- Last updated
- 2023-08-31
- Certified
- 2023-08-31
Frequently asked questions
- What is John Cosgrove's NPI number?
- John Cosgrove's National Provider Identifier (NPI) is 1669638425, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Cosgrove's specialty?
- John Cosgrove is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is John Cosgrove located?
- John Cosgrove's practice location on file with NPPES is 559 State St, Hammond, IN 46320-1533.
- What is John Cosgrove's phone number?
- The practice phone number listed in the NPPES registry for John Cosgrove is (219) 937-3300.
- Does John Cosgrove accept Medicare?
- John Cosgrove is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Cosgrove's NPI active?
- Yes — John Cosgrove's NPI (1669638425) is active in the NPPES registry as of the last update on 2023-08-31.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.