Stephen Holtzman, MD
NPI 1689648073 · Diagnostic Radiology Physician · Templeton, CA
Enrolled with Medicare as Practitioner - Diagnostic Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Stephen Holtzman, MD is a Diagnostic Radiology Physician provider in Templeton, CA (NPI 1689648073).
Provider details
- NPI number
- 1689648073
- Entity type
- Individual
- Primary specialty
- Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A78719 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
9,025 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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) |
|---|---|---|
| X-Ray of Chest, 1 View71045 | 1,279 | $8 |
| Ct Scan Head Or Brain Without Contrast70450 | 447 | $39 |
| Dxa Bone Density Measurement of Hip, Pelvis, Spine77080 | 345 | $9 |
| Ct Scan of Abdomen and Pelvis With Contrast74177 | 305 | $86 |
| X-Ray of Chest, 2 Views71046 | 259 | $11 |
| Dxa Bone Density Measurement of Hip, Pelvis, Spine77080 | 206 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$769 across 27 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-02-14
- Last updated
- 2011-09-29
Frequently asked questions
- What is Stephen Holtzman's NPI number?
- Stephen Holtzman's National Provider Identifier (NPI) is 1689648073, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Stephen Holtzman's specialty?
- Stephen Holtzman is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is Stephen Holtzman located?
- Stephen Holtzman's practice location on file with NPPES is 1310 Las Tablas Rd, Templeton, CA 93465-9737.
- What is Stephen Holtzman's phone number?
- The practice phone number listed in the NPPES registry for Stephen Holtzman is (805) 461-7080.
- Does Stephen Holtzman accept Medicare?
- Stephen Holtzman is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Stephen Holtzman's NPI active?
- Yes — Stephen Holtzman's NPI (1689648073) is active in the NPPES registry as of the last update on 2011-09-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.