Siamak Yasmeh, M.D.
NPI 1811320849 · Orthopaedic Surgery of the Spine Physician · Loma Linda, CA
Enrolled with Medicare as Practitioner - Orthopedic Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Siamak Yasmeh, M.D. is a Orthopaedic Surgery of the Spine Physician provider in Loma Linda, CA (NPI 1811320849).
Provider details
- NPI number
- 1811320849
- Entity type
- Individual
- Primary specialty
- Orthopaedic Surgery of the Spine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- A126694 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
12 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
3 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
418 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 155 | $139 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 106 | $179 |
| X-Ray of Lower and Sacral Spine, 2-3 Views72100 | 76 | $45 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 36 | $98 |
| X-Ray of Upper Spine, 2-3 Views72040 | 32 | $45 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 |
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) | Beneficiaries |
|---|---|---|
| Gabapentin | 250 | 119 |
| Meloxicam | 139 | 61 |
| Diclofenac Sodium | 92 | 50 |
| Pregabalin | 39 | 25 |
| Oxycodone Hcl | 32 | 29 |
| Ibuprofen | 25 | 20 |
| Lorazepam | 14 | 14 |
| Celecoxib |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$281 across 5 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
Additional practice locations (2)
- 621 Science DrMadison, WI 53711Phone: (608) 265-3207Fax: (608) 263-4995
- 621 Science DrMadison, WI 53711Phone: (608) 265-3207Fax: (608) 263-4995
Registry dates
- Enumerated
- 2013-08-13
- Last updated
- 2023-08-25
- Certified
- 2023-08-25
Frequently asked questions
- What is Siamak Yasmeh's NPI number?
- Siamak Yasmeh's National Provider Identifier (NPI) is 1811320849, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Siamak Yasmeh's specialty?
- Siamak Yasmeh is listed in the NPPES registry with a primary specialty of Orthopaedic Surgery of the Spine Physician (Allopathic & Osteopathic Physicians).
- Where is Siamak Yasmeh located?
- Siamak Yasmeh's practice location on file with NPPES is 11406 Loma Linda Dr Ste 226, Loma Linda, CA 92354-3711.
- What is Siamak Yasmeh's phone number?
- The practice phone number listed in the NPPES registry for Siamak Yasmeh is (909) 558-6444.
- Does Siamak Yasmeh accept Medicare?
- Siamak Yasmeh is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Siamak Yasmeh's NPI active?
- Yes — Siamak Yasmeh's NPI (1811320849) is active in the NPPES registry as of the last update on 2023-08-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.