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Dr. William M. Merritt, MD
NPI1609070143PAC ID0042305187
- Medicare services, 2024
- 162,751
- Medicare patients, 2024
- 510
- Part D claims, 2024
- 688
- Publications
- 8
- Hospital affiliations
- 4
- Practice address
- 5 Medical Park, Columbia, SC 29203
- Practice phone
- Call (803) 296-2548
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Merritt's 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 M. Merritt is a gynecologic oncologist in Columbia, South Carolina
Dr. Merritt practices at Prisma Health Richland Hospital in Columbia, South Carolina, part of Prisma Health.
Dr. Merritt's NPI, 1609070143, was assigned on June 11, 2007. Dr. Merritt graduated from University of South Carolina School of Medicine in 2001. Dr. Merritt holds Texas license M6290.
NPI and contact details
- NPI
- 1609070143NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0042305187
- NPI enumeration date
- June 11, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (803) 296-2548
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 51
- Medical school graduation
- 2001
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. William M. Merritt practices at Prisma Health Richland Hospital in Columbia, South Carolina
Dr. Merritt's primary practice is Prisma Health Richland Hospital, at 5 Medical Park, Columbia, SC 29203 in Richland County. The practice phone is (803) 296-2548.
- Prisma Health Richland Hospital5 Medical Park, Columbia, SC 29203 · Richland CountyPhone(803) 296-2548
Source: Dmand AI Affiliation Data
Dr. William M. Merritt is affiliated with 6 sites of care and 1 medical group
Dr. Merritt's primary practice is Prisma Health Richland Hospital in Columbia, South Carolina, part of Prisma Health. Dr. Merritt is also affiliated with Prisma Health Baptist Hospital. The medical group on file is South Carolina Oncology Associates. Dmand AI also links Dr. Merritt to 2 more hospitals, 1 group practice or clinic and 1 home health agency, each named with a free account.
Prisma Health Baptist HospitalSouth Carolina Oncology Associates2 hospitalsNames with a free account1 group practice or clinicName with a free account1 home health agencyName with a free account
See all 7 affiliations for Dr. MerrittSources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. William M. Merritt's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Merritt practices, 6 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Prisma Health Richland Hospital | Available with a free account |
| +5 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
See the EHR and IT leaders at every hospital where Dr. Merritt practices
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Dr. William M. Merritt is one of 15 gynecologic oncologists in South Carolina
Gynecologic oncology is Dr. Merritt's primary specialty in the NPI Registry, under taxonomy code 207VX0201X. Dr. Merritt is licensed in Texas.
Specialties and state licenses
- Gynecologic oncology, TexasPrimary
Gynecologic oncologists near Dr. Merritt
Counts of gynecologic oncologists with a Dmand AI profile, by place and practice. Each opens the list.
15gynecologic oncologists in South Carolina
2gynecologic oncologists in Columbia
2gynecologic oncologists at Prisma Health Richland HospitalSources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. William M. Merritt billed Medicare for 162,751 services in 2024
CMS data shows 162,751 Medicare services from Dr. Merritt across 50 procedure codes in 2024, for 510 Medicare patients. Medicare paid $1,749,423 for them.
Medicare services, 2024162,751
Medicare patients510
Paid by Medicare$1.7M
Procedure codes50
Dr. Merritt's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Drugs given in the office
- 2023: 105,4322024: 129,47123%
- Other services
- 2023: 22,1002024: 24,57111%
- Lab and pathology
- 2023: 3,1662024: 3,50911%
- Tests and treatments
- 2023: 2,7162024: 2,8013%
- Surgery
- 2023: 1,0762024: 1,1789%
- Office and hospital visits
- 2023: 9422024: 9551%
- Imaging
- 2023: 3152024: 26616%
Where Dr. Merritt's Medicare services took place, 2024
- In an office162,691100%
- In a facility600%
Dr. Merritt compared with the South Carolina median for gynecologic oncologists, 2024
- Dr. Merritt
- South Carolina median
- Medicare services
- 162,751vs 461353.0 times
- Medicare patients
- 510vs 2302.2 times
- Part D claims
- 535vs 2102.5 times
Medians across 16 gynecologic oncologists in South Carolina with Dmand AI profiles that report each measure.
Dr. Merritt's 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. Merritt?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Merritt and other gynecologic oncologists in South Carolina.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. William M. Merritt treated 510 Medicare patients in 2024, average age 74
CMS counts 510 Medicare patients who saw Dr. Merritt in 2024. The largest group is 65 to 74, with 266 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 7% are also on Medicaid. Their average risk score is 1.29, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Merritt's median patient age at 63, with 96% women.
Medicare patients, 2024510
Average age74
Average risk score1.29
Also on Medicaid7%
Dr. Merritt's Medicare patients by age, 2024
Dr. Merritt's Medicare patients by sex, 2024
- Women49597%
- Men153%
Chronic conditions among Dr. Merritt's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Cancer61%
- Arthritis44%
- Diabetes34%
- Chronic kidney disease25%
- Anxiety24%
- Depression21%
Share of Medicare patients with each condition. A patient can have several.
Dr. Merritt's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 63
Patient panel by sex, all payers
- Women96%
- Men3%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. William M. Merritt wrote 688 Medicare Part D claims in 2024
In 2024, Dr. Merritt wrote 688 Medicare Part D claims for 181 patients. 79% of them were for generic drugs. CMS names the drug for 535 of them, across 18 drugs with 11 or more claims each, at $1,475,987 in total drug cost. In 2023, CMS named 526 claims across 19 drugs.
Part D claims, 2024688
Drugs named by CMS18
Total drug cost$1.5M
Part D patients181
Dr. Merritt's Part D claims by kind of drug, 2024
- Generic542 claims79%
- Brand-name146 claims21%
Dr. Merritt's 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. Merritt's Part D claims, 2024
- Opioids18%127 of 688 claims
- Antibiotics4%28 of 688 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: 5262024: 5352%
Drugs named by CMS: 18 in 2024, 19 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
Dr. William M. Merritt ranks in the 98th percentile for removal of the uterus in Medicare
Dr. Merritt accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 34 procedures of removal of the uterus by Dr. Merritt, more than 98% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Where Dr. Merritt ranks in Medicare procedure volume
- Removal of the uterus
- 98th percentile34 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Removal of tissue: 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 M. Merritt has 8 publications on record
Dmand AI links 8 papers to Dr. Merritt, published from 2010 to 2021. The most frequent topics are Antineoplastic Combined Chemotherapy Protocols, Ovarian Neoplasms and Paclitaxel. Dr. Merritt's most frequent co-authors are Liz Y. Han, MD, Aparna Ashish Kamat, MD and Robert L. Coleman, MD.
Papers8
Years published2010 to 2021
Dr. Merritt's papers by year, 2010 to 2021
Topics Dr. Merritt writes about most
- Antineoplastic Combined Chemotherapy Protocols
- Ovarian Neoplasms
- Paclitaxel
Dr. Merritt's most frequent co-authors
- Liz Y. Han, MD3 shared papers
- Aparna Ashish Kamat, MD3 shared papers
- Robert L. Coleman, MD2 shared papers
Recent publications by Dr. Merritt
Administration, MetronomicAlbuminsAngiogenesis Inhibitors
Antineoplastic Combined Chemotherapy ProtocolsCarboplatinCarcinoma, Ovarian Epithelial
See who Dr. Merritt researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Merritt works with, so you can find a warm path to the right gynecologic oncologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. William M. Merritt received $20,534 in industry payments from 2016 to 2025
CMS Open Payments shows 565 general payments to Dr. Merritt from 75 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 55% of the total. AstraZeneca Pharmaceuticals LP paid the most, $9,805.
General payments to Dr. Merritt by program year, 2016 to 2025
General payments to Dr. Merritt by kind, 2016 to 2025
$20.5Kin total
- Food and beverage$11,32855%
- Speaker and faculty fees$8,60042%
- Travel and lodging$2611%
- Gifts$2031%
- Education$1421%
Companies that paid Dr. Merritt 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 M. Merritt graduated from University of South Carolina School of Medicine
Dr. Merritt graduated from University of South Carolina School of Medicine in 2001.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. William M. Merritt'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 DataDmand AI Org Hierarchy 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) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| 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 M. Merritt
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 M. Merritt's NPI number?
Dr. William M. Merritt's NPI number is 1609070143. It was assigned on June 11, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. William M. Merritt?
Dr. William M. Merritt is a gynecologic oncologist in Columbia, South Carolina. The primary specialty in the NPI Registry is Gynecologic Oncology Physician (taxonomy code 207VX0201X).
Where does Dr. William M. Merritt practice?
Dr. Merritt practices at 5 Medical Park, Columbia, SC 29203. Dr. Merritt's primary practice is Prisma Health Richland Hospital in Columbia, South Carolina, part of Prisma Health. Dmand AI also links Dr. Merritt to 2 hospitals, 1 group practice or clinic and 1 home health agency.
What is Dr. William M. Merritt's office phone number?
The practice phone on file for Dr. Merritt is (803) 296-2548.
What is Dr. William M. Merritt's medical license number?
Dr. Merritt holds Texas license M6290.
Which hospitals is Dr. William M. Merritt affiliated with?
Dr. Merritt practices at Prisma Health Richland Hospital in Columbia, South Carolina. Dr. Merritt is also affiliated with Prisma Health Baptist Hospital. Dmand AI links Dr. Merritt to 2 more hospitals.
What medical group is Dr. William M. Merritt part of?
Dr. Merritt is linked to South Carolina Oncology Associates.
Does Dr. William M. Merritt accept Medicare?
Yes. CMS data shows Dr. Merritt billed Medicare for 162,751 services in 2024, and Dr. Merritt accepts Medicare assignment.
How many Medicare patients does Dr. William M. Merritt see?
CMS counts 510 Medicare patients who saw Dr. Merritt in 2024, with an average age of 74.
What services does Dr. William M. Merritt bill to Medicare?
In 2024, Dr. Merritt's most billed Medicare services were injected or infused drug (J9267), injected or infused drug (J0185) and injected or infused drug (J1627).
Show 6 more questionsShow fewer questions
Where did Dr. William M. Merritt go to medical school?
Dr. Merritt graduated from University of South Carolina School of Medicine in 2001.
What drugs does Dr. William M. Merritt prescribe most?
In 2024 Medicare Part D data, Dr. Merritt's most prescribed drugs by claims were Ondansetron ODT, Letrozole and Tramadol HCl.
Has Dr. William M. Merritt received payments from drug or device companies?
CMS Open Payments shows $20,534 in general payments to Dr. Merritt from 75 companies from 2016 to 2025. The largest total came from AstraZeneca Pharmaceuticals LP.
How long has Dr. William M. Merritt been practicing?
Dr. Merritt graduated from medical school in 2001, 25 years ago.
Does Dr. William M. Merritt do research?
Dmand AI links 8 publications to Dr. Merritt, published from 2010 to 2021.
Who does Dr. William M. Merritt publish with?
Dr. Merritt's most frequent co-authors are Liz Y. Han, MD (3 shared papers), Aparna Ashish Kamat, MD (3 shared papers) and Robert L. Coleman, MD (2 shared papers).
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