Alex Rainow, MD
NPI 1255577904 · Cardiovascular Disease Physician · Sonoma, CA
Enrolled with Medicare as Practitioner - Cardiovascular Disease (cardiology) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Alex Rainow, MD is a Cardiovascular Disease Physician provider in Sonoma, CA (NPI 1255577904).
Provider details
- NPI number
- 1255577904
- Entity type
- Individual
- Primary specialty
- Cardiovascular Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- C154306 (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
17 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
6,012 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) |
|---|---|---|
| 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 | 2,059 | $16 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 1,935 | $133 |
| Ultrasound of Heart With Color-Depicted Blood Flow, Rate, Direction and Valve Function93306 | 433 | $69 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 294 | $125 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 224 | $186 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 57 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Apixabanbrand: Eliquis | 752 | 173 |
| Metoprolol Succinate | 549 | 159 |
| Losartan Potassium | 438 | 119 |
| Amlodipine Besylate | 434 | 109 |
| Atorvastatin Calcium | 365 | 110 |
| Furosemide | 350 | 110 |
| Rosuvastatin Calcium |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$146 across 2 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)
- 2 Bon Air Rd Ste 100Larkspur, CA 94939-1144Phone: (415) 927-0666Fax: (415) 927-6159
Registry dates
- Enumerated
- 2008-12-31
- Last updated
- 2021-07-27
- Certified
- 2021-07-27
Frequently asked questions
- What is Alex Rainow's NPI number?
- Alex Rainow's National Provider Identifier (NPI) is 1255577904, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Alex Rainow's specialty?
- Alex Rainow is listed in the NPPES registry with a primary specialty of Cardiovascular Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Alex Rainow located?
- Alex Rainow's practice location on file with NPPES is 651 1st St W Ste L, Sonoma, CA 95476-7046.
- What is Alex Rainow's phone number?
- The practice phone number listed in the NPPES registry for Alex Rainow is (707) 935-1470.
- Does Alex Rainow accept Medicare?
- Alex Rainow is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Alex Rainow's NPI active?
- Yes — Alex Rainow's NPI (1255577904) is active in the NPPES registry as of the last update on 2021-07-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.