Andrew Heisler, MD
NPI 1043639933 · Rheumatology Physician · Kalamazoo, MI
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Andrew Heisler, MD is a Rheumatology Physician provider in Kalamazoo, MI (NPI 1043639933).
Provider details
- NPI number
- 1043639933
- Entity type
- Individual
- Primary specialty
- Rheumatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 036142788 (IL)
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 tenure25% of score
12 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
731 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 | 321 | $94 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 297 | $16 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 45 | $139 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 | 35 | $175 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 18 | $129 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 28 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Hydroxychloroquine Sulfate | 466 | 134 |
| Prednisone | 450 | 135 |
| Methotrexate Sodiumbrand: Methotrexate | 422 | 122 |
| Methylprednisolone | 97 | 65 |
| Alendronate Sodium | 87 | 27 |
| Folic Acid | 69 | 23 |
| Sulfasalazine | 67 | 20 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$718 across 35 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)
- 675 N Saint Clair St Ste 14-100Chicago, IL 60611-5966Phone: (312) 695-8628Fax: (312) 503-0994
Registry dates
- Enumerated
- 2014-04-08
- Last updated
- 2020-09-03
- Certified
- 2020-09-03
Frequently asked questions
- What is Andrew Heisler's NPI number?
- Andrew Heisler's National Provider Identifier (NPI) is 1043639933, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Andrew Heisler's specialty?
- Andrew Heisler is listed in the NPPES registry with a primary specialty of Rheumatology Physician (Allopathic & Osteopathic Physicians).
- Where is Andrew Heisler located?
- Andrew Heisler's practice location on file with NPPES is 601 John St Ste M-030, Kalamazoo, MI 49007-5341.
- What is Andrew Heisler's phone number?
- The practice phone number listed in the NPPES registry for Andrew Heisler is (269) 343-3939.
- Does Andrew Heisler accept Medicare?
- Andrew Heisler is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Andrew Heisler's NPI active?
- Yes — Andrew Heisler's NPI (1043639933) is active in the NPPES registry as of the last update on 2020-09-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.