Parker Lehmann, DO
NPI 1528859980 · Internal Medicine Physician · Grand Blanc, MI
Enrolled with Medicare as Order and Referring Only - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Parker Lehmann, DO is a Internal Medicine Physician provider in Grand Blanc, MI (NPI 1528859980).
Provider details
- NPI number
- 1528859980
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Male
- Sole proprietor
- Yes
- License
- 5151017668 (MI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
1 yr in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2025-05-15
- Last updated
- 2025-05-15
- Certified
- 2025-05-06
Frequently asked questions
- What is Parker Lehmann's NPI number?
- Parker Lehmann's National Provider Identifier (NPI) is 1528859980, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Parker Lehmann's specialty?
- Parker Lehmann is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Parker Lehmann located?
- Parker Lehmann's practice location on file with NPPES is 1 Genesys Pkwy, Grand Blanc, MI 48439-8065.
- What is Parker Lehmann's phone number?
- The practice phone number listed in the NPPES registry for Parker Lehmann is (810) 606-5000.
- Does Parker Lehmann accept Medicare?
- Parker Lehmann is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Parker Lehmann's NPI active?
- Yes — Parker Lehmann's NPI (1528859980) is active in the NPPES registry as of the last update on 2025-05-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.