Ian Downs, MD
NPI 1790216406 · Endocrinology, Diabetes & Metabolism Physician · Santa Monica, CA
Enrolled with Medicare as Practitioner - Endocrinology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ian Downs, MD is a Endocrinology, Diabetes & Metabolism Physician provider in Santa Monica, CA (NPI 1790216406).
Provider details
- NPI number
- 1790216406
- Entity type
- Individual
- Primary specialty
- Endocrinology, Diabetes & Metabolism PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A171659 (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
9 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
1,187 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 | 339 | $138 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 276 | $17 |
| Blood Glucose (sugar) Level82947 | 114 | $4 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 113 | $81 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 101 | $178 |
| Hemoglobin A1c Level |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 30 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levothyroxine Sodium | 134 | 48 |
| Semaglutidebrand: Ozempic | 132 | 29 |
| Metformin Hclbrand: Metformin Hcl Er | 111 | 49 |
| Tirzepatidebrand: Mounjaro | 104 | 21 |
| Metformin Hcl | 77 | 32 |
| Empagliflozinbrand: Jardiance | 62 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$43 across 1 record (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)
- 801 Massachusetts AveCrosstown 2Boston, MA 02118-2526Phone: (617) 414-7399Fax: (617) 414-4676
Registry dates
- Enumerated
- 2017-03-23
- Last updated
- 2023-08-07
- Certified
- 2023-08-07
Frequently asked questions
- What is Ian Downs's NPI number?
- Ian Downs's National Provider Identifier (NPI) is 1790216406, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ian Downs's specialty?
- Ian Downs is listed in the NPPES registry with a primary specialty of Endocrinology, Diabetes & Metabolism Physician (Allopathic & Osteopathic Physicians).
- Where is Ian Downs located?
- Ian Downs's practice location on file with NPPES is 2020 Santa Monica Blvd Ste 550, Santa Monica, CA 90404-2125.
- What is Ian Downs's phone number?
- The practice phone number listed in the NPPES registry for Ian Downs is (310) 828-1050.
- Does Ian Downs accept Medicare?
- Ian Downs is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ian Downs's NPI active?
- Yes — Ian Downs's NPI (1790216406) is active in the NPPES registry as of the last update on 2023-08-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.