Clarissa Ann Mashchak, M.D.
Gynecology Physician · Ooltewah, TN
Clarissa Ann Mashchak, M.D. is a gynecology physician with a practice address in Ooltewah, Tennessee, and NPI 1245202183, issued on Feb 4, 2006. Check the license (Tennessee MD0000018459, as entered in NPPES) on the Tennessee Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Clarissa Ann Mashchak
- Credential
- M.D.
- Primary taxonomy
- Gynecology Physician 207VG0400X
- License number
- MD0000018459 TN
Self-reported in NPPES; status is on the state search - Practice location
- 4884 Sunkist Ter, Ooltewah, TN 37363
- Phone
- (423) 774-8281
- Enumerated
- Feb 4, 2006
- Record last updated
- Oct 3, 2025
- Medicaid ID
- 3032078 TN
- Medicare enrollment
- Enrolled (PECOS I20051006000941); accepts Medicare assignment
- Medical or professional school
- Loma Linda University School Of Medicine, 1974
- Entity
- Type 1 · individual
Verify Clarissa Ann Mashchak in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTennessee Board of Medical Examiners
Search for license MD0000018459Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
50% more Medicare Part D claims than the average gynecology physician in 2024
449 Medicare Part D claims for 91 beneficiaries, against an average of 299 among the 1,919 providers of this specialty who prescribed in Part D. Brand-name drugs were 21% of claims.
Most prescribed
- Progesterone96 claims
- Estradiol (Twice Weekly)77 claims
- Estradiol56 claims
- Levothyroxine Sodium41 claims
- Valacyclovir33 claims
- Estradiol (Once Weekly)31 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.
The MIPS final score for 2023 (Medicare payment program): 96.2 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $139.92
7 payments; by number, the most common kind was food and beverage; the largest payer was Astellas Pharma US Inc. The 1,398 providers of this specialty with any payment received $2,469.88 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.
Gynecology Physician providers in Tennessee
There are 82 gynecology physician records in Tennessee.
Other gynecology physician records in Tennessee
- Rony Adam, MDNashville, TN1992734792
- Wesley Adams, M.D.Bristol, TN1811975543
- Ted Anderson, MDNashville, TN1326130741
- Leslie Appiah, MDNashville, TN1144300567
- Charles Barker, M.D.Altamont, TN1568425122
- Jessica Bell, M.D.Memphis, TN1679966923
- Daniel Biller, M.D.Nashville, TN1225099377
- Michael Bishop, M.D.Franklin, TN1386647550
- Todd Boren, M.D.Chattanooga, TN1730142340
- Gary Boyle, M.D.Bristol, TN1720066459
Common questions
What is Clarissa Ann Mashchak, M.D.'s NPI number?
Clarissa Ann Mashchak, M.D.'s National Provider Identifier (NPI) is 1245202183, issued on Feb 4, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Clarissa Ann Mashchak, M.D. located?
The NPPES record lists a practice address at 4884 Sunkist Ter, Ooltewah, TN, 37363. Phone: (423) 774-8281. Providers update this record themselves, so call before visiting.
How can I verify Clarissa Ann Mashchak, M.D.'s license?
NPPES lists Tennessee license number MD0000018459, as entered by the provider. Search the Tennessee Board of Medical Examiners at https://www.tn.gov/health/licensure/me.html. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Clarissa Ann Mashchak, M.D. prescribe under Medicare Part D?
In 2024, Clarissa Ann Mashchak, M.D. had 449 Medicare Part D claims for 91 beneficiaries; the average among gynecology physician prescribers was 299. Part D covers Medicare prescriptions only.
What is Clarissa Ann Mashchak, M.D.'s MIPS final score?
The 2023 MIPS final score is 96.2 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.