Caroline E. Merritt-Schiermeyer, DO
Internal Medicine Physician · Midwest City, OK
Caroline E. Merritt-Schiermeyer, DO is an internal medicine physician with a practice address in Midwest City, Oklahoma, and NPI 1598971277, issued on May 16, 2007. Check the license (Oklahoma 4213, as entered in NPPES) on the Oklahoma Board of Medical Licensure and Supervision; the Medicare figures below come from public CMS files.
- Name
- Caroline E. Merritt-Schiermeyer
- Credential
- DO
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 4213 OK
Self-reported in NPPES; status is on the state search - Practice location
- 2825 Parklawn Dr, Midwest City, OK 73110
- Phone
- (405) 610-8056
- Enumerated
- May 16, 2007
- Record last updated
- Jun 20, 2025
- Fax
- (405) 610-1879
- Medicaid ID
- 200182660A OK
- Medicare enrollment
- Enrolled (PECOS I20110927000811); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 1,115 in Oklahoma → Look up another NPI →
Also registered at 2825 Parklawn Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kristi Adkins, APRNFamily Nurse Practitioner1407417447
- Khabbab Amin, DOInternal Medicine Physician1821526237
- Joel Anderson, M.D.Emergency Medicine Physician1215995089
- Stephanie Beard, RDRegistered Dietitian1366159857
- Morgan BellPhysician Assistant1083256374
- Brittany Burk, MS, RDN, LD, CNSCRegistered Dietitian1780158568
Verify Caroline E. Merritt-Schiermeyer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersOklahoma Board of Medical Licensure and Supervision
Search for license 4213Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
95% fewer Medicare Part D claims than the average internal medicine physician in 2024
156 Medicare Part D claims for 66 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Doxycycline Hyclate24 claims
- Gentamicin Sulfate21 claims
- Ciprofloxacin Hcl18 claims
- Sulfamethoxazole-Trimethoprim16 claims
- Amoxicillin-Clavulanate Potass15 claims
- Levofloxacin11 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $415.43
14 payments; by number, the most common kind was food and beverage; the largest payer was Next Science LLC. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Caroline E. Merritt-Schiermeyer among 1,115 internal medicine physician records in Oklahoma
Caroline E. Merritt-Schiermeyer, DO is one of 1,115 internal medicine physician records with a practice address in Oklahoma. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 43% of them.
- NPI issued2007 · 43% of these records are older, 50% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated2003 · median 2007 among the 653 with a school on file
- Record last updated2025 · 56% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Oklahoma practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
12 internal medicine physician records list a practice address in Midwest City
They are 12 of the 1,250 NPPES records with a practice address in Midwest City, and 1,115 internal medicine physician records in Oklahoma.
All 1,115 in Oklahoma → Every provider in Midwest City → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Khabbab Amin, DOMidwest City, OK 731101821526237
- Arifa Khan, M.DOklahoma City, OK 731101144571662
- Benjamin Mansalis, M.D.Midwest City, OK 731101760777627
- Carol Njoki, MDMidwest City, OK 731101164984993
- Sadiq Shakir, M.D.Midwest City, OK 731101699791319
- Trina Swygert, MDMidwest City, OK 731101902831803
- Michael Thrower, MDMidwest City, OK 731101366648859
- Anthony Umoh, MDMidwest City, OK 731101891190492
Common questions
What is Caroline E. Merritt-Schiermeyer, DO's NPI number?
Caroline E. Merritt-Schiermeyer, DO's National Provider Identifier (NPI) is 1598971277, issued on May 16, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Caroline E. Merritt-Schiermeyer, DO located?
The NPPES record lists a practice address at 2825 Parklawn Dr, Midwest City, OK, 73110. Phone: (405) 610-8056. Providers update this record themselves, so call before visiting.
How can I verify Caroline E. Merritt-Schiermeyer, DO's license?
NPPES lists Oklahoma license number 4213, as entered by the provider. Search the Oklahoma Board of Medical Licensure and Supervision at https://www.okmedicalboard.org/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Caroline E. Merritt-Schiermeyer, DO prescribe under Medicare Part D?
In 2024, Caroline E. Merritt-Schiermeyer, DO had 156 Medicare Part D claims for 66 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.