William La Rosa, M.D.
NPI 1710372651 · Family Medicine Physician · Phoenix, AZ
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William La Rosa, M.D. is a Family Medicine Physician provider in Phoenix, AZ (NPI 1710372651).
Provider details
- NPI number
- 1710372651
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 56120 (AZ)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
11 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
108 Medicare services, 2024 (ranked within specialty)
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 methodology.
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 Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 56 | $63 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 32 | $93 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 20 | $138 |
Typical Medicare-allowed amounts for these services range $63–$138 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 37 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Semaglutidebrand: Ozempic | 83 | 20 |
| Insulin Glargine,hum.rec.anlogbrand: Lantus Solostar | 79 | 22 |
| Empagliflozinbrand: Jardiance | 77 | 17 |
| Atorvastatin Calcium | 59 | 22 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 55 | 16 |
| Pen Needle, Diabeticbrand: Sure Comfort Pen Needle | 51 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2015-03-30
- Last updated
- 2026-05-15
- Certified
- 2026-05-15
Frequently asked questions
- What is William La Rosa's NPI number?
- William La Rosa's National Provider Identifier (NPI) is 1710372651, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William La Rosa's specialty?
- William La Rosa is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is William La Rosa located?
- William La Rosa's practice location on file with NPPES is 4212 N 16th St, Phoenix, AZ 85016-5319.
- What is William La Rosa's phone number?
- The practice phone number listed in the NPPES registry for William La Rosa is (602) 263-1200.
- Does William La Rosa accept Medicare?
- William La Rosa is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William La Rosa's NPI active?
- Yes — William La Rosa's NPI (1710372651) is active in the NPPES registry as of the last update on 2026-05-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.