Gregory Dammann, M.D.
NPI 1689652455 · Orthopaedic Surgery Physician · Galena, IL
Enrolled with Medicare as Practitioner - Orthopedic Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gregory Dammann, M.D. is a Orthopaedic Surgery Physician provider in Galena, IL (NPI 1689652455).
Provider details
- NPI number
- 1689652455
- Entity type
- Individual
- Primary specialty
- Orthopaedic Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 036138935 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
20 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
2 documented practice locations
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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 · 7 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 110 | 76 |
| Tramadol Hcl | 92 | 58 |
| Methylprednisolone | 24 | 22 |
| Amoxicillin | 19 | 13 |
| Meloxicam | 16 | 11 |
| Cephalexin | 13 | 11 |
| Cyclobenzaprine Hcl | 12 | 11 |
These counts cover prescriptions paid through Medicare Part D in 2024 — they include 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 , 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.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$3,870 across 37 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (1)
- 117 N Main StElizabeth, IL 61028-8800Phone: (815) 858-2238Fax: (815) 858-2239
Registry dates
- Enumerated
- 2006-01-03
- Last updated
- 2026-02-03
- Certified
- 2026-02-03
Frequently asked questions
- What is Gregory Dammann's NPI number?
- Gregory Dammann's National Provider Identifier (NPI) is 1689652455, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Dammann's specialty?
- Gregory Dammann is listed in the NPPES registry with a primary specialty of Orthopaedic Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is Gregory Dammann located?
- Gregory Dammann's practice location on file with NPPES is 1 Medical Center Dr, Galena, IL 61036-8118.
- What is Gregory Dammann's phone number?
- The practice phone number listed in the NPPES registry for Gregory Dammann is (815) 777-1340.
- Does Gregory Dammann accept Medicare?
- Gregory Dammann is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gregory Dammann's NPI active?
- Yes — Gregory Dammann's NPI (1689652455) is active in the NPPES registry as of the last update on 2026-02-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.