Michael Warren, M.D.
NPI 1144257239 · Obstetrics & Gynecology Physician · Royal Oak, MI
Enrolled with Medicare as Practitioner - Obstetrics/Gynecology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Michael Warren, M.D. is a Obstetrics & Gynecology Physician provider in Royal Oak, MI (NPI 1144257239).
Provider details
- NPI number
- 1144257239
- Entity type
- Individual
- Primary specialty
- Obstetrics & Gynecology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 230919-1 (NY)
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 tenure33% of score
19 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
3 documented practice locations
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$32 across 2 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 (2)
- 468 Cadieux RdGrosse Pointe, MI 48230-1507Phone: (313) 473-1705Fax: (313) 473-1389
- 5141 BroadwayNew York, NY 10034-1159Phone: (212) 305-4098
Registry dates
- Enumerated
- 2006-06-26
- Last updated
- 2022-07-28
- Certified
- 2022-07-28
Frequently asked questions
- What is Michael Warren's NPI number?
- Michael Warren's National Provider Identifier (NPI) is 1144257239, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michael Warren's specialty?
- Michael Warren is listed in the NPPES registry with a primary specialty of Obstetrics & Gynecology Physician (Allopathic & Osteopathic Physicians).
- Where is Michael Warren located?
- Michael Warren's practice location on file with NPPES is 3601 W 13 Mile Rd, Royal Oak, MI 48073-6712.
- What is Michael Warren's phone number?
- The practice phone number listed in the NPPES registry for Michael Warren is (248) 712-4120.
- Does Michael Warren accept Medicare?
- Michael Warren is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Michael Warren's NPI active?
- Yes — Michael Warren's NPI (1144257239) is active in the NPPES registry as of the last update on 2022-07-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.