William Ahlenius, M.D.
NPI 1811940117 · Physical Medicine & Rehabilitation Physician · Maplewood, MN
Enrolled with Medicare as Practitioner - Physical Medicine and Rehabilitation · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Ahlenius, M.D. is a Physical Medicine & Rehabilitation Physician provider in Maplewood, MN (NPI 1811940117).
Provider details
- NPI number
- 1811940117
- Entity type
- Individual
- Primary specialty
- Physical Medicine & Rehabilitation PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- PERMIT#30018731 (TX)
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
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
19 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) |
|---|---|---|
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 19 | $161 |
Typical Medicare-allowed amounts for these services range $161–$161 (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
Registry dates
- Enumerated
- 2006-05-18
- Last updated
- 2021-05-13
- Certified
- 2021-05-13
Frequently asked questions
- What is William Ahlenius's NPI number?
- William Ahlenius's National Provider Identifier (NPI) is 1811940117, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Ahlenius's specialty?
- William Ahlenius is listed in the NPPES registry with a primary specialty of Physical Medicine & Rehabilitation Physician (Allopathic & Osteopathic Physicians).
- Where is William Ahlenius located?
- William Ahlenius's practice location on file with NPPES is 1856 Beam Ave Ste 100, Maplewood, MN 55109-1162.
- What is William Ahlenius's phone number?
- The practice phone number listed in the NPPES registry for William Ahlenius is (763) 201-8191.
- Does William Ahlenius accept Medicare?
- William Ahlenius is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Ahlenius's NPI active?
- Yes — William Ahlenius's NPI (1811940117) is active in the NPPES registry as of the last update on 2021-05-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.