Michael Gruba, M.D.
NPI 1487745808 · Physical Medicine & Rehabilitation Physician · Anaheim, CA
Enrolled with Medicare as Practitioner - Preventive Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Michael Gruba, M.D. is a Physical Medicine & Rehabilitation Physician provider in Anaheim, CA (NPI 1487745808).
Provider details
- NPI number
- 1487745808
- Entity type
- Individual
- Primary specialty
- Physical Medicine & Rehabilitation PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 108707 (CA)
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 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
Mailing address
Registry dates
- Enumerated
- 2006-09-28
- Last updated
- 2021-11-29
Frequently asked questions
- What is Michael Gruba's NPI number?
- Michael Gruba's National Provider Identifier (NPI) is 1487745808, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michael Gruba's specialty?
- Michael Gruba is listed in the NPPES registry with a primary specialty of Physical Medicine & Rehabilitation Physician (Allopathic & Osteopathic Physicians).
- Where is Michael Gruba located?
- Michael Gruba's practice location on file with NPPES is 3460 E La Palma Ave, Anaheim, CA 92806-2020.
- What is Michael Gruba's phone number?
- The practice phone number listed in the NPPES registry for Michael Gruba is (714) 644-6450.
- Does Michael Gruba accept Medicare?
- Michael Gruba is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Michael Gruba's NPI active?
- Yes — Michael Gruba's NPI (1487745808) is active in the NPPES registry as of the last update on 2021-11-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.