William Pierce, MD
NPI 1497838593 · Family Medicine Physician · Merrillville, IN
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Pierce, MD is a Family Medicine Physician provider in Merrillville, IN (NPI 1497838593).
Provider details
- NPI number
- 1497838593
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 01025010 (IN)
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
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
1,228 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 | 602 | $104 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 237 | $67 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 208 | $149 |
| Hospital Discharge Day Management, 30 Minutes Or Less99238 | 163 | $68 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 18 | $156 |
Typical Medicare-allowed amounts for these services range $67–$156 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, 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 · 104 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 311 | 51 |
| Oxycodone Hcl/Acetaminophenbrand: Oxycodone-Acetaminophen | 249 | 37 |
| Alprazolam | 216 | 34 |
| Levothyroxine Sodium | 185 | 50 |
| Gabapentin | 116 | 27 |
| Metoprolol Succinate | 101 | 33 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$141 across 7 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
Registry dates
- Enumerated
- 2006-10-23
- Last updated
- 2008-07-21
Frequently asked questions
- What is William Pierce's NPI number?
- William Pierce's National Provider Identifier (NPI) is 1497838593, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Pierce's specialty?
- William Pierce is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is William Pierce located?
- William Pierce's practice location on file with NPPES is 210 E 90th Drive, Merrillville, IN 46410-8102.
- What is William Pierce's phone number?
- The practice phone number listed in the NPPES registry for William Pierce is (219) 738-2008.
- Does William Pierce accept Medicare?
- William Pierce is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Pierce's NPI active?
- Yes — William Pierce's NPI (1497838593) is active in the NPPES registry as of the last update on 2008-07-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.