John Grotberg, MD
NPI 1659865079 · Pulmonary Disease Physician · Indianapolis, IN
Enrolled with Medicare as Practitioner - Pulmonary Disease · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Grotberg, MD is a Pulmonary Disease Physician provider in Indianapolis, IN (NPI 1659865079).
Provider details
- NPI number
- 1659865079
- Entity type
- Individual
- Primary specialty
- Pulmonary Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 01093052A (IN)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
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
8 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
21 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) |
|---|---|---|
| Critical Care, First 30-74 Minutes99291 | 21 | $196 |
Typical Medicare-allowed amounts for these services range $196–$196 (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
Additional practice locations (2)
- 1 Barnes Jewish Hospital PlzSaint Louis, MO 63110-1003Phone: (314) 454-8763
- 3015 N Ballas RdSaint Louis, MO 63131-2329Phone: (314) 996-5000
Registry dates
- Enumerated
- 2018-06-19
- Last updated
- 2025-03-12
- Certified
- 2025-03-12
Frequently asked questions
- What is John Grotberg's NPI number?
- John Grotberg's National Provider Identifier (NPI) is 1659865079, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Grotberg's specialty?
- John Grotberg is listed in the NPPES registry with a primary specialty of Pulmonary Disease Physician (Allopathic & Osteopathic Physicians).
- Where is John Grotberg located?
- John Grotberg's practice location on file with NPPES is 1701 Senate Blvd, Indianapolis, IN 46202-1239.
- What is John Grotberg's phone number?
- The practice phone number listed in the NPPES registry for John Grotberg is (317) 962-5820.
- Does John Grotberg accept Medicare?
- John Grotberg is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Grotberg's NPI active?
- Yes — John Grotberg's NPI (1659865079) is active in the NPPES registry as of the last update on 2025-03-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.