David Ly, DO
NPI 1598159741 · Psychiatry Physician · Morgan Hill, CA
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
David Ly, DO is a Psychiatry Physician provider in Morgan Hill, CA (NPI 1598159741).
Provider details
- NPI number
- 1598159741
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Male
- Sole proprietor
- No
- License
- 20A15255 (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
11 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
4 documented practice locations
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 · 44 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Quetiapine Fumarate | 214 | 19 |
| Trazodone Hcl | 169 | 22 |
| Olanzapine | 121 | 18 |
| Aripiprazole | 108 | 14 |
| Bupropion Hclbrand: Bupropion Xl | 105 | 13 |
| Sertraline Hcl | 105 | 15 |
| Clonazepam |
Practice location
Mailing address
Additional practice locations (3)
- 215 Huerta AveGreenfield, CA 93927-5762Phone: (831) 674-2180
- 9343 Tech Center Dr Ste 110Sacramento, CA 95826-2592Phone: (916) 457-3129
- 4604a Roosevelt AveSacramento, CA 95820-4520Phone: (916) 357-4129
Registry dates
- Enumerated
- 2015-03-26
- Last updated
- 2026-02-12
- Certified
- 2026-02-12
Frequently asked questions
- What is David Ly's NPI number?
- David Ly's National Provider Identifier (NPI) is 1598159741, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is David Ly's specialty?
- David Ly is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is David Ly located?
- David Ly's practice location on file with NPPES is 18217 Hale Ave, Morgan Hill, CA 95037-3550.
- What is David Ly's phone number?
- The practice phone number listed in the NPPES registry for David Ly is (408) 465-8280.
- Does David Ly accept Medicare?
- David Ly is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is David Ly's NPI active?
- Yes — David Ly's NPI (1598159741) is active in the NPPES registry as of the last update on 2026-02-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.