Donald Massenburg, M.D.
NPI 1932118536 · Internal Medicine Physician · Green Bay, WI
Enrolled with Medicare as Practitioner - Rheumatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Donald Massenburg, M.D. is a Internal Medicine Physician provider in Green Bay, WI (NPI 1932118536).
Provider details
- NPI number
- 1932118536
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 61024 (WI)
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
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
1,066 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) |
|---|---|---|
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 222 | $9 |
| Red Blood Cell Sedimentation Rate, to Detect Inflammation, Automated85652 | 206 | $3 |
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test and Automated Differential White Blood Cell Count85025 | 162 | $8 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 158 | $88 |
| 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 | 148 | $16 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 33 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Prednisone | 385 | 106 |
| Methotrexate Sodiumbrand: Methotrexate | 240 | 75 |
| Hydroxychloroquine Sulfate | 221 | 73 |
| Leflunomide | 164 | 55 |
| Folic Acid | 90 | 30 |
| Sulfasalazine | 54 | 19 |
| Gabapentin | 53 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$848 across 16 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
Registry dates
- Enumerated
- 2006-08-05
- Last updated
- 2018-03-27
Frequently asked questions
- What is Donald Massenburg's NPI number?
- Donald Massenburg's National Provider Identifier (NPI) is 1932118536, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Donald Massenburg's specialty?
- Donald Massenburg is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Donald Massenburg located?
- Donald Massenburg's practice location on file with NPPES is 3021 Voyager Dr, Green Bay, WI 54311-8303.
- What is Donald Massenburg's phone number?
- The practice phone number listed in the NPPES registry for Donald Massenburg is (920) 496-4700.
- Does Donald Massenburg accept Medicare?
- Donald Massenburg is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Donald Massenburg's NPI active?
- Yes — Donald Massenburg's NPI (1932118536) is active in the NPPES registry as of the last update on 2018-03-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.