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Ray Kiefer, MD
NPI 1255320008 · Anesthesiology Physician · Muskegon, MI
Ray Kiefer, MD is a Anesthesiology Physician provider in Muskegon, MI (NPI 1255320008).
Provider details
- NPI number
- 1255320008
- Entity type
- Individual
- Primary specialty
- Anesthesiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- RK051108 (MI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(91/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 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
1700 Clinton St
Muskegon, MI 49442-5502
Phone: (231) 726-3511
Street-level locationGet directions
Mailing address
550 W Western Ave
Muskegon, MI 49440-1045
Registry dates
- Enumerated
- 2005-10-14
- Last updated
- 2012-02-28
Frequently asked questions
- What is Ray Kiefer's NPI number?
- Ray Kiefer's National Provider Identifier (NPI) is 1255320008, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ray Kiefer's specialty?
- Ray Kiefer is listed in the NPPES registry with a primary specialty of Anesthesiology Physician (Allopathic & Osteopathic Physicians).
- Where is Ray Kiefer located?
- Ray Kiefer's practice location on file with NPPES is 1700 Clinton St, Muskegon, MI 49442-5502.
- What is Ray Kiefer's phone number?
- The practice phone number listed in the NPPES registry for Ray Kiefer is (231) 726-3511.
- Is Ray Kiefer's NPI active?
- Yes — Ray Kiefer's NPI (1255320008) is active in the NPPES registry as of the last update on 2012-02-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.