Dennis St. Peter, M.D.
NPI 1275608127 · Psychiatry Physician · Santa Cruz, CA
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Dennis St. Peter, M.D. is a Psychiatry Physician provider in Santa Cruz, CA (NPI 1275608127).
Provider details
- NPI number
- 1275608127
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- G031432 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
530 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. 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 does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Psychotherapy With Evaluation and Management Visit, 30 Minutes90833 | 254 | $73 |
| Established Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 10 Minutes Or More99212 | 141 | $61 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 110 | $96 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 25 | $135 |
Typical Medicare-allowed amounts for these services range $61–$135 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 14 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Clonazepam | 75 |
| Lorazepam | 71 |
| Bupropion Hclbrand: Bupropion Xl | 51 |
| Venlafaxine Hclbrand: Venlafaxine Hcl Er | 49 |
| Aripiprazole | 47 |
| Trazodone Hcl | 41 |
| Escitalopram Oxalate | 29 |
| Duloxetine Hcl | 22 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-11-22
- Last updated
- 2007-07-09
Frequently asked questions
- What is Dennis St. Peter's NPI number?
- Dennis St. Peter's National Provider Identifier (NPI) is 1275608127, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Dennis St. Peter's specialty?
- Dennis St. Peter is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Dennis St. Peter located?
- Dennis St. Peter's practice location on file with NPPES is 710 River St, Santa Cruz, CA 95060-2748.
- What is Dennis St. Peter's phone number?
- The practice phone number listed in the NPPES registry for Dennis St. Peter is (831) 423-1000.
- Does Dennis St. Peter accept Medicare?
- Dennis St. Peter is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Dennis St. Peter's NPI active?
- Yes — Dennis St. Peter's NPI (1275608127) is active in the NPPES registry as of the last update on 2007-07-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.