Duncan Chapman, MD
NPI 1437474152 · Family Medicine Physician · Portage, MI
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Duncan Chapman, MD is a Family Medicine Physician provider in Portage, MI (NPI 1437474152).
Provider details
- NPI number
- 1437474152
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 4301102712 (MI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
16 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
921 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 708 | $94 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 109 | $123 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 28 | $64 |
| Annual Wellness Visit; Includes a Personalized Prevention Plan of Service (pps), Initial VisitG0438 | 20 | $159 |
| Removal of Impacted Ear Wax69210 | 17 | $32 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 153 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 1,003 | 275 |
| Lisinopril | 521 | 148 |
| Amlodipine Besylate | 489 | 127 |
| Levothyroxine Sodium | 371 | 99 |
| Omeprazole | 359 | 108 |
| Gabapentin | 325 | 72 |
| Metoprolol Succinate |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$812 across 33 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)
- 7901 Angling RdPortage, MI 49024-0714Phone: (269) 324-8600
Registry dates
- Enumerated
- 2010-04-06
- Last updated
- 2023-11-27
- Certified
- 2020-10-02
Frequently asked questions
- What is Duncan Chapman's NPI number?
- Duncan Chapman's National Provider Identifier (NPI) is 1437474152, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Duncan Chapman's specialty?
- Duncan Chapman is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Duncan Chapman located?
- Duncan Chapman's practice location on file with NPPES is 2700 East Centre Ave, Portage, MI 49002.
- What is Duncan Chapman's phone number?
- The practice phone number listed in the NPPES registry for Duncan Chapman is (269) 286-7050.
- Does Duncan Chapman accept Medicare?
- Duncan Chapman is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Duncan Chapman's NPI active?
- Yes — Duncan Chapman's NPI (1437474152) is active in the NPPES registry as of the last update on 2023-11-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.