Allison Webber, M.D.
NPI 1538328588 · Nephrology Physician · San Francisco, CA
Enrolled with Medicare as Practitioner - Nephrology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Allison Webber, M.D. is a Nephrology Physician provider in San Francisco, CA (NPI 1538328588).
Provider details
- NPI number
- 1538328588
- Entity type
- Individual
- Primary specialty
- Nephrology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- 231360 (NY)
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 tenure28% of score
18 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
824 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 High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 286 | $161 |
| 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 | 218 | $19 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 107 | $131 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 103 | $88 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 30 | $145 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 27 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Prednisone | 543 | 164 |
| Tacrolimus | 141 | 40 |
| Sulfamethoxazole/Trimethoprimbrand: Sulfamethoxazole-Trimethoprim | 110 | 38 |
| Mycophenolate Mofetil | 87 | 27 |
| Valganciclovir Hcl | 61 | 34 |
| Omeprazole | 56 | 25 |
| Fluconazole | 37 | 31 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2008-06-05
- Last updated
- 2009-08-03
Frequently asked questions
- What is Allison Webber's NPI number?
- Allison Webber's National Provider Identifier (NPI) is 1538328588, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Allison Webber's specialty?
- Allison Webber is listed in the NPPES registry with a primary specialty of Nephrology Physician (Allopathic & Osteopathic Physicians).
- Where is Allison Webber located?
- Allison Webber's practice location on file with NPPES is 505 Parnassus Ave, San Francisco, CA 94143-0780.
- What is Allison Webber's phone number?
- The practice phone number listed in the NPPES registry for Allison Webber is (415) 353-1290.
- Does Allison Webber accept Medicare?
- Allison Webber is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Allison Webber's NPI active?
- Yes — Allison Webber's NPI (1538328588) is active in the NPPES registry as of the last update on 2009-08-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.