William Crumpton, M,D.
NPI 1205989373 · Family Medicine Physician · Tustin, CA
William Crumpton, M,D. is a Family Medicine Physician provider in Tustin, CA (NPI 1205989373).
Provider details
- NPI number
- 1205989373
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M,D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- G27062A (CA)
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
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 · 5 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Levothyroxine Sodium | 16 |
| Amlodipine Besylate | 12 |
| Suvorexantbrand: Belsomra | 12 |
| Sertraline Hcl | 12 |
| Rosuvastatin Calcium | 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
- 2007-01-19
- Last updated
- 2021-10-21
- Certified
- 2021-10-21
Frequently asked questions
- What is William Crumpton's NPI number?
- William Crumpton's National Provider Identifier (NPI) is 1205989373, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Crumpton's specialty?
- William Crumpton is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is William Crumpton located?
- William Crumpton's practice location on file with NPPES is 14642 Newport Ave, Tustin, CA 92780-6057.
- What is William Crumpton's phone number?
- The practice phone number listed in the NPPES registry for William Crumpton is (714) 669-4466.
- Is William Crumpton's NPI active?
- Yes — William Crumpton's NPI (1205989373) is active in the NPPES registry as of the last update on 2021-10-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.