Homayoun Siman, MD
NPI 1477971125 · General Practice Physician · Palm Desert, CA
Enrolled with Medicare as Practitioner - General Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Homayoun Siman, MD is a General Practice Physician provider in Palm Desert, CA (NPI 1477971125).
Provider details
- NPI number
- 1477971125
- Entity type
- Individual
- Primary specialty
- General Practice PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A140616 (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
12 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
9,812 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 | 1,503 | $120 |
| Chronic Care Management Services, First 20 Minutes of Clinical Staff Time Directed By Health Care Professional, Per Calendar Month99490 | 1,324 | $62 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 980 | $80 |
| Office Or Other Outpatient Visit for the Evaluation and Management of Established Patient That May Not Require Presence of Healthcare Professional99211 | 854 | $24 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 817 | $9 |
| Injection of Drug Or Substance Under Skin Or Into Muscle |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 181 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 848 | 276 |
| Levothyroxine Sodium | 500 | 148 |
| Losartan Potassium | 390 | 124 |
| Amlodipine Besylate | 377 | 137 |
| Rosuvastatin Calcium | 306 | 110 |
| Tamsulosin Hcl | 259 | 94 |
| Montelukast Sodium |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$419 across 18 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 (1)
- 82013 Dr Carreon BlvdIndio, CA 92201-4832Phone: (760) 342-4242
Registry dates
- Enumerated
- 2014-03-31
- Last updated
- 2020-02-12
- Certified
- 2020-02-12
Frequently asked questions
- What is Homayoun Siman's NPI number?
- Homayoun Siman's National Provider Identifier (NPI) is 1477971125, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Homayoun Siman's specialty?
- Homayoun Siman is listed in the NPPES registry with a primary specialty of General Practice Physician (Allopathic & Osteopathic Physicians).
- Where is Homayoun Siman located?
- Homayoun Siman's practice location on file with NPPES is 73211 Fred Waring Dr Ste 101, Palm Desert, CA 92260-2888.
- What is Homayoun Siman's phone number?
- The practice phone number listed in the NPPES registry for Homayoun Siman is (607) 837-0321.
- Does Homayoun Siman accept Medicare?
- Homayoun Siman is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Homayoun Siman's NPI active?
- Yes — Homayoun Siman's NPI (1477971125) is active in the NPPES registry as of the last update on 2020-02-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.