William Workman, D.O.
NPI 1407110257 · Internal Medicine Physician · Battle Creek, MI
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Workman, D.O. is a Internal Medicine Physician provider in Battle Creek, MI (NPI 1407110257).
Provider details
- NPI number
- 1407110257
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- Sole proprietor
- No
- License
- 5101019940 (MI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
13 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
1,078 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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 Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 286 | $95 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 281 | $95 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 114 | $128 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 109 | $127 |
| 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 | 95 | $16 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 200 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levothyroxine Sodium | 679 | 185 |
| Atorvastatin Calcium | 605 | 192 |
| Amlodipine Besylate | 489 | 146 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 439 | 105 |
| Omeprazole | 417 | 135 |
| Losartan Potassium | 417 | 127 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$475 across 32 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (1)
- 363 Fremont StSuite 308Battle Creek, MI 49017-3389Phone: (269) 245-8393Fax: (269) 245-8394
Registry dates
- Enumerated
- 2012-06-26
- Last updated
- 2023-11-27
- Certified
- 2020-10-20
Frequently asked questions
- What is William Workman's NPI number?
- William Workman's National Provider Identifier (NPI) is 1407110257, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Workman's specialty?
- William Workman is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is William Workman located?
- William Workman's practice location on file with NPPES is 2845 Capital Ave Sw Ste 302, Battle Creek, MI 49015-4187.
- What is William Workman's phone number?
- The practice phone number listed in the NPPES registry for William Workman is (269) 979-6333.
- Does William Workman accept Medicare?
- William Workman is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Workman's NPI active?
- Yes — William Workman's NPI (1407110257) is active in the NPPES registry as of the last update on 2023-11-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.