Donald Davies, M.D.
NPI 1972759959 · Psychiatry Physician · Aptos, CA
Donald Davies, M.D. is a Psychiatry Physician provider in Aptos, CA (NPI 1972759959).
Provider details
- NPI number
- 1972759959
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- G36113 (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
17 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 · 9 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Trazodone Hcl | 33 |
| Lamotrigine | 27 |
| Quetiapine Fumarate | 18 |
| Clonazepam | 16 |
| Oxcarbazepine | 13 |
| Lithium Carbonate | 12 |
| Gabapentin | 12 |
| Alprazolam | 12 |
| Bupropion Hclbrand: Bupropion Hcl Sr | 11 |
These counts cover prescriptions paid through Medicare Part D in 2024 — they include 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 , 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
- 2008-08-11
- Last updated
- 2023-11-29
Frequently asked questions
- What is Donald Davies's NPI number?
- Donald Davies's National Provider Identifier (NPI) is 1972759959, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Donald Davies's specialty?
- Donald Davies is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Donald Davies located?
- Donald Davies's practice location on file with NPPES is 605 Nisene Meadows Ct, Aptos, CA 95003.
- What is Donald Davies's phone number?
- The practice phone number listed in the NPPES registry for Donald Davies is (831) 476-9691.
- Is Donald Davies's NPI active?
- Yes — Donald Davies's NPI (1972759959) is active in the NPPES registry as of the last update on 2023-11-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.