IndividualActive
Ray Clark, M.D.
NPI 1780803023 · Hematology & Oncology Physician · Jackson, MI
Ray Clark, M.D. is a Hematology & Oncology Physician provider in Jackson, MI (NPI 1780803023).
Provider details
- NPI number
- 1780803023
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 4301025864 (MI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(89/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs 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
1100 E Michigan Ave
Jackson, MI 49201-1847
Phone: (517) 789-7122
Street-level locationGet directions
Mailing address
1976 Q Ln
Clarklake, MI 49234-9747
Registry dates
- Enumerated
- 2007-04-25
- Last updated
- 2007-07-08
Frequently asked questions
- What is Ray Clark's NPI number?
- Ray Clark's National Provider Identifier (NPI) is 1780803023, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ray Clark's specialty?
- Ray Clark is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Ray Clark located?
- Ray Clark's practice location on file with NPPES is 1100 E Michigan Ave, Jackson, MI 49201-1847.
- What is Ray Clark's phone number?
- The practice phone number listed in the NPPES registry for Ray Clark is (517) 789-7122.
- Is Ray Clark's NPI active?
- Yes — Ray Clark's NPI (1780803023) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.