Douglas Irwin, M.D.
NPI 1538115621 · Family Medicine Physician · Manchester, KY
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Douglas Irwin, M.D. is a Family Medicine Physician provider in Manchester, KY (NPI 1538115621).
Provider details
- NPI number
- 1538115621
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 38637 (KY)
Specialties & taxonomies
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
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
415 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) |
|---|---|---|
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 212 | $160 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 168 | $103 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 35 | $100 |
Typical Medicare-allowed amounts for these services range $100–$160 (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.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 13 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Lisinopril | 22 | 11 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 15 | — |
| Amlodipine Besylate | 15 | — |
| Quetiapine Fumarate | 15 | — |
| Bupropion Hclbrand: Bupropion Hcl Sr | 13 | — |
| Rosuvastatin Calcium | 13 | — |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-05-26
- Last updated
- 2015-05-27
Frequently asked questions
- What is Douglas Irwin's NPI number?
- Douglas Irwin's National Provider Identifier (NPI) is 1538115621, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Douglas Irwin's specialty?
- Douglas Irwin is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Douglas Irwin located?
- Douglas Irwin's practice location on file with NPPES is 94 Marie Langdon Dr, Manchester, KY 40962-6353.
- What is Douglas Irwin's phone number?
- The practice phone number listed in the NPPES registry for Douglas Irwin is (606) 599-9955.
- Does Douglas Irwin accept Medicare?
- Douglas Irwin is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Douglas Irwin's NPI active?
- Yes — Douglas Irwin's NPI (1538115621) is active in the NPPES registry as of the last update on 2015-05-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.