William Summers, MD
NPI 1265471650 · Internal Medicine Physician · Saint Louis, MO
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Summers, MD is a Internal Medicine Physician provider in Saint Louis, MO (NPI 1265471650).
Provider details
- NPI number
- 1265471650
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 2007010580 (MO)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 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
701 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 | 345 | $123 |
| 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 | 81 | $16 |
| Annual Depression Screening, 5 to 15 MinutesG0444 | 62 | $18 |
| Urinalysis, Manual Test81002 | 52 | $3 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 45 | $9 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 182 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Bictegrav/Emtricit/Tenofov Alabrand: Biktarvy | 837 | 84 |
| Rosuvastatin Calcium | 334 | 52 |
| Omeprazole | 307 | 49 |
| Amlodipine Besylate | 294 | 59 |
| Atorvastatin Calcium | 292 | 62 |
| Tamsulosin Hcl | 254 | 38 |
| Alprazolam |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$6,125 across 69 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)
- 6188 Mackenzie Valley CtSaint Louis, MO 63123-3477Phone: (314) 686-9714Fax: (888) 464-1108
Registry dates
- Enumerated
- 2006-06-04
- Last updated
- 2024-05-31
- Certified
- 2023-09-06
Frequently asked questions
- What is William Summers's NPI number?
- William Summers's National Provider Identifier (NPI) is 1265471650, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Summers's specialty?
- William Summers is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is William Summers located?
- William Summers's practice location on file with NPPES is 3915 Watson Rd Ste 202, Saint Louis, MO 63109-1251.
- What is William Summers's phone number?
- The practice phone number listed in the NPPES registry for William Summers is (314) 244-3818.
- Does William Summers accept Medicare?
- William Summers is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Summers's NPI active?
- Yes — William Summers's NPI (1265471650) is active in the NPPES registry as of the last update on 2024-05-31.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.