John Grouse, D.D.S.
NPI 1275698276 · General Practice Dentistry · Montebello, CA
Enrolled with Medicare as Order and Referring Only - Oral Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Grouse, D.D.S. is a General Practice Dentistry provider in Montebello, CA (NPI 1275698276).
Provider details
- NPI number
- 1275698276
- Entity type
- Individual
- Primary specialty
- General Practice DentistryDental Providers
- Credential
- D.D.S.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 32311 (CA)
Specialties & taxonomies
Dental Providers
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.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 3 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Azithromycin | 12 |
| Amoxicillin | 11 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 11 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-12-27
- Last updated
- 2012-01-26
Frequently asked questions
- What is John Grouse's NPI number?
- John Grouse's National Provider Identifier (NPI) is 1275698276, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Grouse's specialty?
- John Grouse is listed in the NPPES registry with a primary specialty of General Practice Dentistry (Dental Providers).
- Where is John Grouse located?
- John Grouse's practice location on file with NPPES is 1217 W Whittier Blvd, Montebello, CA 90640-4642.
- What is John Grouse's phone number?
- The practice phone number listed in the NPPES registry for John Grouse is (323) 721-1161.
- Does John Grouse accept Medicare?
- John Grouse is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Grouse's NPI active?
- Yes — John Grouse's NPI (1275698276) is active in the NPPES registry as of the last update on 2012-01-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.