Linda Williams, MD
NPI 1598859225 · Family Medicine Physician · Tucson, AZ
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Linda Williams, MD is a Family Medicine Physician provider in Tucson, AZ (NPI 1598859225).
Provider details
- NPI number
- 1598859225
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 29339 (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
19 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
84 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) |
|---|---|---|
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 24 | $9 |
| Blood Test, Basic Group of Blood Chemicals (calcium, Total)80048 | 20 | $8 |
| Blood Test, Lipids (cholesterol and Triglycerides)80061 | 14 | $13 |
| Hemoglobin A1c Level83036 | 13 | $10 |
| Administration of Influenza Virus VaccineG0008 | 13 | $31 |
Typical Medicare-allowed amounts for these services range $8–$31 (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 · 58 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 589 | 212 |
| Lisinopril | 329 | 107 |
| Metformin Hcl | 210 | 69 |
| Amlodipine Besylate | 197 | 70 |
| Losartan Potassium | 186 | 61 |
| Levothyroxine Sodium | 132 | 41 |
| Glipizidebrand: Glipizide Er |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-10-03
- Last updated
- 2025-01-29
- Certified
- 2025-01-29
Frequently asked questions
- What is Linda Williams's NPI number?
- Linda Williams's National Provider Identifier (NPI) is 1598859225, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Linda Williams's specialty?
- Linda Williams is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Linda Williams located?
- Linda Williams's practice location on file with NPPES is 839 W Congress St, Tucson, AZ 85745-2819.
- What is Linda Williams's phone number?
- The practice phone number listed in the NPPES registry for Linda Williams is (520) 670-3909.
- Does Linda Williams accept Medicare?
- Linda Williams is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Linda Williams's NPI active?
- Yes — Linda Williams's NPI (1598859225) is active in the NPPES registry as of the last update on 2025-01-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.