Dr. William C. Summers, MD
- Medicare services, 2024
- 728
- Medicare patients, 2024
- 127
- Part D claims, 2024
- 12,006
- Hospital affiliations
- 5
- Industry payments
- $187,549
- Practice address
- 3915 Watson Rd, Saint Louis, MO 63109-1251
- Practice phone
- Call (314) 267-9316
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Summers Healthcare
Primary care practice · Saint Louis, Missouri
Find Dr. Summers' professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. William C. Summers is an internist in Saint Louis, Missouri
Dr. Summers practices at Summers Healthcare in Saint Louis, Missouri.
Dr. Summers' NPI, 1265471650, was assigned on June 4, 2006. Dr. Summers graduated from University of Alabama School of Medicine in 1999. Dr. Summers holds Missouri license 2007010580.
- NPI
- 1265471650NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0648224329
- NPI enumeration date
- June 4, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (314) 267-9316
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 53
- Medical school graduation
- 1999
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. William C. Summers practices at Summers Healthcare in Saint Louis, Missouri
Dr. Summers' primary practice is Summers Healthcare, at 3915 Watson Rd, Saint Louis, MO 63109-1251. The practice phone is (314) 267-9316.
- Summers Healthcare3915 Watson Rd, Saint Louis, MO 63109-1251Phone(314) 267-9316
Source: Dmand AI Affiliation Data
Dr. William C. Summers is affiliated with 6 sites of care and 1 medical group
Dr. Summers' primary practice is Summers Healthcare in Saint Louis, Missouri. Dr. Summers is also affiliated with Barnes-Jewish Hospital. The medical group on file is Summers Healthcare. Dmand AI also links Dr. Summers to 4 more hospitals, each named with a free account.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. William C. Summers' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Summers practices, 6 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Summers Healthcare | Available with a free account |
| +5 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. William C. Summers is one of 2,114 internists in Missouri
Internal medicine is Dr. Summers' primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dmand AI has Dr. Summers' licenses on file in 2 states: Missouri and Tennessee.
Specialties and state licenses
- Internal medicine, MissouriPrimary
- Tennessee license
Internists near Dr. Summers
Counts of internists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. William C. Summers billed Medicare for 728 services in 2024
CMS data shows 728 Medicare services from Dr. Summers across 11 procedure codes in 2024, for 127 Medicare patients. Medicare paid $40,511 for them. Every service was in an office.
Dr. Summers' Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 4282024: 4231%
- Other services
- 2023: 272024: 170530%
- Lab and pathology
- 2023: 672024: 5222%
- Surgery
- 2023: 142024: 45221%
- Tests and treatments
- 2023: 272024: 3841%
Dr. Summers compared with the Missouri median for internists, 2024
- Dr. Summers
- Missouri median
- Medicare services
- 728vs 53037% above
- Medicare patients
- 127vs 21140% below
- Part D claims
- 11,450vs 32535.2 times
Medians across 2,076 internists in Missouri with Dmand AI profiles that report each measure.
Dr. Summers' most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Summers?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Summers and other internists in Missouri.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. William C. Summers treated 127 Medicare patients in 2024, average age 64
CMS counts 127 Medicare patients who saw Dr. Summers in 2024. The largest group is under 65, with 55 patients. 68% of them have high blood pressure, and 68% have high cholesterol. 37% are also on Medicaid. Their average risk score is 1.51, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Summers' median patient age at 53, with 30% women.
Dr. Summers' Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Summers' Medicare patients by sex, 2024
- Women4636%
- Men8164%
Chronic conditions among Dr. Summers' Medicare patients, 2024
- High blood pressure68%
- High cholesterol68%
- Mood disorders60%
- Depression51%
- Arthritis39%
- Anxiety37%
- Diabetes27%
- COPD24%
Share of Medicare patients with each condition. A patient can have several.
Dr. Summers' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 53
Patient panel by sex, all payers
- Women30%
- Men70%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. William C. Summers wrote 12,006 Medicare Part D claims in 2024
In 2024, Dr. Summers wrote 12,006 Medicare Part D claims for 281 patients. 75% of them were for generic drugs. CMS names the drug for 11,450 of them, across 181 drugs with 11 or more claims each, at $6,129,342 in total drug cost. In 2023, CMS named 9,299 claims across 172 drugs.
Dr. Summers' Part D claims by kind of drug, 2024
- Generic9,025 claims75%
- Brand-name2,879 claims24%
- Other102 claims1%
Dr. Summers' most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Summers' Part D claims, 2024
- Opioids6%762 of 12,006 claims
- Antibiotics2%272 of 12,006 claims
- Antipsychotics, patients 65 and over0%59 of 12,006 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 9,2992024: 11,45023%
Drugs named by CMS: 181 in 2024, 172 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Dr. William C. Summers takes part in Medicare
Dr. Summers accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Skin biopsy: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. William C. Summers received $187,549 in industry payments from 2016 to 2025
CMS Open Payments shows 911 general payments to Dr. Summers from 35 drug and device companies from 2016 to 2025. Speaker and faculty fees make up the largest share, 76% of the total. Gilead Sciences, Inc. paid the most, $181,202.
General payments to Dr. Summers by program year, 2016 to 2025
General payments to Dr. Summers by kind, 2016 to 2025
- Speaker and faculty fees$142,73176%
- Travel and lodging$30,24916%
- Food and beverage$13,2207%
- Consulting fees$1,2101%
- Education$1380%
Companies that paid Dr. Summers the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. William C. Summers graduated from University of Alabama School of Medicine
Dr. Summers graduated from University of Alabama School of Medicine in 1999.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. William C. Summers's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. William C. Summers
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. William C. Summers' NPI number?
Dr. William C. Summers' NPI number is 1265471650. It was assigned on June 4, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. William C. Summers?
Dr. William C. Summers is an internist in Saint Louis, Missouri. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. William C. Summers practice?
Dr. Summers practices at 3915 Watson Rd, Saint Louis, MO 63109-1251. Dr. Summers' primary practice is Summers Healthcare in Saint Louis, Missouri. Dmand AI also links Dr. Summers to 4 hospitals.
What is Dr. William C. Summers' office phone number?
The practice phone on file for Dr. Summers is (314) 267-9316.
What is Dr. William C. Summers' medical license number?
Dr. Summers holds Missouri license 2007010580, one of the licenses on file in 2 states.
Which states has Dr. William C. Summers been licensed in?
Dmand AI has state licenses on file for Dr. Summers in Missouri and Tennessee.
Which hospitals is Dr. William C. Summers affiliated with?
Dr. Summers is affiliated with Barnes-Jewish Hospital. Dmand AI links Dr. Summers to 4 more hospitals.
What medical group is Dr. William C. Summers part of?
Dr. Summers is linked to Summers Healthcare.
Does Dr. William C. Summers accept Medicare?
Yes. CMS data shows Dr. Summers billed Medicare for 728 services in 2024, and Dr. Summers accepts Medicare assignment.
How many Medicare patients does Dr. William C. Summers see?
CMS counts 127 Medicare patients who saw Dr. Summers in 2024, with an average age of 64.
Show 5 more questionsShow fewer questions
What services does Dr. William C. Summers bill to Medicare?
In 2024, Dr. Summers' most billed Medicare services were office visit, established patient (99214), medicare service (G2211) and medicare service (G0444).
Where did Dr. William C. Summers go to medical school?
Dr. Summers graduated from University of Alabama School of Medicine in 1999.
What drugs does Dr. William C. Summers prescribe most?
In 2024 Medicare Part D data, Dr. Summers' most prescribed drugs by claims were Biktarvy, Rosuvastatin Calcium and Omeprazole.
Has Dr. William C. Summers received payments from drug or device companies?
CMS Open Payments shows $187,549 in general payments to Dr. Summers from 35 companies from 2016 to 2025. The largest total came from Gilead Sciences, Inc.
How long has Dr. William C. Summers been practicing?
Dr. Summers graduated from medical school in 1999, 27 years ago.
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