Anne Volk Johnson, MD
NPI 1689637332 · Hospitalist Physician · Madison, WI
Enrolled with Medicare as Practitioner - Hospitalist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Anne Volk Johnson, MD is a Hospitalist Physician provider in Madison, WI (NPI 1689637332).
Provider details
- NPI number
- 1689637332
- Entity type
- Individual
- Primary specialty
- Hospitalist PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 46036 (WI)
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
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
449 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 415 | $73 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 34 | $120 |
Typical Medicare-allowed amounts for these services range $73–$120 (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.
Practice location
Mailing address
Additional practice locations (1)
- 5001 Monona DrMonona, WI 53716Phone: (608) 222-8779Fax: (608) 222-8944
Registry dates
- Enumerated
- 2006-04-11
- Last updated
- 2021-01-25
- Certified
- 2021-01-25
Frequently asked questions
- What is Anne Volk Johnson's NPI number?
- Anne Volk Johnson's National Provider Identifier (NPI) is 1689637332, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Anne Volk Johnson's specialty?
- Anne Volk Johnson is listed in the NPPES registry with a primary specialty of Hospitalist Physician (Allopathic & Osteopathic Physicians).
- Where is Anne Volk Johnson located?
- Anne Volk Johnson's practice location on file with NPPES is 2402 Winnebago St, Madison, WI 53704-5341.
- What is Anne Volk Johnson's phone number?
- The practice phone number listed in the NPPES registry for Anne Volk Johnson is (608) 242-6855.
- Does Anne Volk Johnson accept Medicare?
- Anne Volk Johnson is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Anne Volk Johnson's NPI active?
- Yes — Anne Volk Johnson's NPI (1689637332) is active in the NPPES registry as of the last update on 2021-01-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.