Donald Sipes, MD
NPI 1225145428 · Obstetrics & Gynecology Physician · Green Bay, WI
Enrolled with Medicare as Practitioner - Obstetrics/Gynecology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Donald Sipes, MD is a Obstetrics & Gynecology Physician provider in Green Bay, WI (NPI 1225145428).
Provider details
- NPI number
- 1225145428
- Entity type
- Individual
- Primary specialty
- Obstetrics & Gynecology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 34379 (WI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 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
39 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 39 | $84 |
Typical Medicare-allowed amounts for these services range $84–$84 (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 · 15 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Simvastatin | 46 | 11 |
| Bisoprolol/Hydrochlorothiazidebrand: Bisoprolol-Hydrochlorothiazide | 45 | 13 |
| Atorvastatin Calcium | 39 | — |
| Levothyroxine Sodium | 25 | — |
| Estradiol | 19 | — |
| Progesterone, Micronizedbrand: Progesterone | 19 | — |
| Escitalopram Oxalate |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-08-24
- Last updated
- 2023-10-19
- Certified
- 2023-10-19
Frequently asked questions
- What is Donald Sipes's NPI number?
- Donald Sipes's National Provider Identifier (NPI) is 1225145428, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Donald Sipes's specialty?
- Donald Sipes is listed in the NPPES registry with a primary specialty of Obstetrics & Gynecology Physician (Allopathic & Osteopathic Physicians).
- Where is Donald Sipes located?
- Donald Sipes's practice location on file with NPPES is 2845 Greenbrier Rd, Green Bay, WI 54308-8900.
- What is Donald Sipes's phone number?
- The practice phone number listed in the NPPES registry for Donald Sipes is (920) 288-8400.
- Does Donald Sipes accept Medicare?
- Donald Sipes is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Donald Sipes's NPI active?
- Yes — Donald Sipes's NPI (1225145428) is active in the NPPES registry as of the last update on 2023-10-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.