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DR. CLARISSA ANN MASHCHAK M.D.
NPI 1245202183
Obstetrics & Gynecology - Gynecology in Ooltewah, TN

Active since February 04, 2006PECOS EnrolledAccepts Medicare Assignment
96.19/100
CMS Quality Rating
4884 SUNKIST TER, OOLTEWAH, TN 37363(423) 774-8281 Get Directions Write a Review

NPPES record last updated: October 3, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Dr. Clarissa Ann Mashchak M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. CLARISSA ANN MASHCHAK M.D. (NPI 1245202183) is an individual gynecology provider in Ooltewah, Tennessee, licensed in Tennessee (MD0000018459) and active in the NPI registry since February 2006. She is enrolled in Medicare PECOS, is affiliated with Memorial Healthcare System, Inc, and is a graduate of Loma Linda University School Of Medicine (1974).

NPPES Registry Identity

NPI1245202183
Entity TypeIndividualFemale
Primary Taxonomy207VG0400X
Provider Legal NameDR. CLARISSA ANN MASHCHAKCredential: M.D.
Location Address4884 SUNKIST TEROoltewah, TN 37363-6851
Mailing Address4884 Sunkist TerOoltewah, TN 37363-6851 · (423) 774-8281
Phone(423) 774-8281
Sole ProprietorYes
Medical School CMSLoma Linda University School Of MedicineGraduated 1974
Enumeration DateFebruary 4, 2006
Last NPPES UpdateOctober 3, 2025
NPPES CertifiedOctober 3, 2025
✔ NPI 1245202183 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyObstetrics & Gynecology · GynecologyAllopathic & Osteopathic Physicians
Taxonomy Code207VG0400X
License✔ Licensed in TN · MD0000018459
Definition
A physician who specializes in diagnosis, treatment, and management of patients with gynecologic conditions. Source: National Uniform Claim Committee
Also ListedObstetrics & Gynecology · Reproductive EndocrinologyTaxonomy 207VE0102X · License MD0000018459 (TN)
4884 SUNKIST TER, Ooltewah, TN 37363
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Other Names 1

Professional Name (2)Dr. C. Ann Mashchak M.d.

Other Identifiers 2

Medicaid3032078TN
Other4270474Blue Cross Blue Shield Tn

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Alliant Health Plans, Inc., Ambetter from Absolute Total Care, Ambetter Health and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Clarissa Ann Mashchak M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID1052336278
PECOS Enrollment IDI20051006000941
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 6

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Cervical or vaginal cancer screening; pelvic and clinical breast examination G0101
This procedure involves checking for health issues in the lower abdomen and chest area. It helps identify early signs of certain conditions, increasing the chance for successful treatment. It's a routine check-up that's important for maintaining good health.
87 services87 patients
Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215
This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.
53 services34 patients
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
39 services34 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
35 services32 patients
Screening papanicolaou smear; obtaining, preparing and conveyance of cervical or vaginal smear to laboratory Q0091
A Papanicolaou smear, often called a Pap smear, is a test to check for changes in cells. A small sample is gently collected from the lower region and sent to a lab for examination. This helps in early detection of potential health issues.
27 services27 patients
Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more 99212
This is a routine check-up for patients who have previously seen the doctor. During this 10-19 minute visit, the doctor will review your health status, discuss any concerns, and manage ongoing treatments or medications. It's a chance to ensure your health is on track.
13 services13 patients

Hospital Affiliations CMS Care Compare 2

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Memorial Healthcare System, Inc

Acute Care Hospitals · Chattanooga, TN
5/5 CMS rating
OwnershipVoluntary non-profit - Church
CMS Certification Number440091
Location2525 Desales AveChattanooga, TN 37404 · Hamilton County

Erlanger Medical Center

Acute Care Hospitals · Chattanooga, TN
2/5 CMS rating
OwnershipGovernment - Hospital District or Authority
CMS Certification Number440104
Location975 E 3rd StChattanooga, TN 37403 · Hamilton County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 37363 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$121.80 typical visit price
range $52.64 – $160.89
Typical copayment $30.45 (range $13.16 – $40.22)
Most-billed visit code 99204
Established Patient
$66.01 typical visit price
range $16.72 – $131.41
Typical copayment $16.50 (range $4.18 – $32.85)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

96.19/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored through an Alternative Payment Model
Quality85.2
Promoting Interoperability100
Improvement Activities40

Reported Quality Measures

Breast Cancer Screening
Percentage of women 50-74 years of age who had a mammogram to screen for breast cancer
79%969 patients4/55-star benchmark: 92%
Cervical Cancer Screening
Percentage of women 21-64 years of age who were screened for cervical cancer using either of the following criteria: - Women age 21-64 who had cervical cytology performed every 3 years - Women age 30-64 who had cervical cytology/human papillomavirus (HPV)…
90%969 patients
Preventive Care and Screening: Body Mass Index (BMI) Screening and Follow-Up Plan
Percentage of patients aged 18 years and older with a BMI documented during the current encounter or during the previous twelve months AND with a BMI outside of normal parameters, a follow-up plan is documented during the encounter or during the previous…
32%1,233 patients2/55-star benchmark: 97%
Preventive Care and Screening: Tobacco Use: Screening and Cessation Intervention
Percentage of patients aged 18 years and older who were screened for tobacco use one or more times within 24 months AND who received tobacco cessation intervention if identified as a tobacco user
Patients screenedForUse: 95% · 1,367 patients
Patients tobacco: 21% · 24 patients
92%1,367 patients4/55-star benchmark: 98%
Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

Patient Reviews User submitted

Reviews are submitted by site visitors and approved by a human moderator before publication.

Review by Robbie ***** November 16, 2025

5/5
I have been seeing Dr Mashchak for over 30 years. I have always left my appointment with the knowledge of what my problem is and the best part of it is that she will lay out a plan to the next step if needed and in a language so I under what is going on. I always felt at ease at every visit I have with her . I am blessed and thankful to have Dr Mashcheck as my doctor and as a FRIEND.
Provider 5/5 Office Staff 5/5
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Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Clarissa Mashchak's NPI number?

The NPI number for Clarissa Mashchak is 1245202183. It was assigned to this individual provider in the NPPES registry on February 4, 2006. The provider is also known as Dr. C. Ann Mashchak M.D..

Where is Clarissa Mashchak located?

Clarissa Mashchak practices at 4884 Sunkist Ter, Ooltewah, TN 37363. The listed phone number is (423) 774-8281.

What is Clarissa Mashchak's specialty?

The primary specialty registered for this NPI is Obstetrics & Gynecology, specializing in Gynecology, with taxonomy code 207VG0400X.

Is Clarissa Mashchak enrolled in Medicare?

Yes. Clarissa Mashchak is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

What insurance does Clarissa Mashchak accept?

Health plans from Alliant Health Plans, Inc., Ambetter Health, Ambetter from Absolute Total Care, Ambetter of Alabama and Ambetter of North Carolina and 1 other insurer list Clarissa Mashchak as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Clarissa Mashchak affiliated with any hospitals?

According to CMS data, Clarissa Mashchak is affiliated with Memorial Healthcare System, Inc and Erlanger Medical Center.

When was this NPI record last updated?

The NPPES record for Clarissa Mashchak was last updated on October 3, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.