Matthew Stubblefield, M.D.
NPI 1326215740 · Psychiatry Physician · Palo Alto, CA
Matthew Stubblefield, M.D. is a Psychiatry Physician provider in Palo Alto, CA (NPI 1326215740).
Provider details
- NPI number
- 1326215740
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- G072442 (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
18 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 · 8 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Dextroamphetamine/Amphetaminebrand: Dextroamphetamine-Amphet Er | 29 |
| Atomoxetine Hcl | 20 |
| Dextroamphetamine/Amphetaminebrand: Dextroamphetamine-Amphetamine | 14 |
| Escitalopram Oxalate | 12 |
| Dextroamphetamine Sulfatebrand: Dextroamphetamine Sulfate Er | 11 |
| Methylphenidate Hclbrand: Methylphenidate Er | 11 |
| Methylphenidate Hcl | 11 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2008-05-14
- Last updated
- 2008-05-14
Frequently asked questions
- What is Matthew Stubblefield's NPI number?
- Matthew Stubblefield's National Provider Identifier (NPI) is 1326215740, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Matthew Stubblefield's specialty?
- Matthew Stubblefield is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Matthew Stubblefield located?
- Matthew Stubblefield's practice location on file with NPPES is 3303 Alma St, Palo Alto, CA 94306-3501.
- What is Matthew Stubblefield's phone number?
- The practice phone number listed in the NPPES registry for Matthew Stubblefield is (650) 856-0406.
- Is Matthew Stubblefield's NPI active?
- Yes — Matthew Stubblefield's NPI (1326215740) is active in the NPPES registry as of the last update on 2008-05-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.