Mary Susan Isaac, ANP
Family Nurse Practitioner · Knoxville, TN
Mary Susan Isaac, ANP is a family nurse practitioner with a practice address in Knoxville, Tennessee, and NPI 1538143961, issued on Nov 30, 2005. Check the license (Tennessee 11625, as entered in NPPES) with the Tennessee board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Mary Susan Isaac
- Credential
- ANP
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License numbers
- 11625 TN
145963 TN
Self-reported in NPPES; status is on the state search - Practice location
- 7503 S Northshore Dr, Knoxville, TN 37919
- Phone
- (865) 531-1300
- Enumerated
- Nov 30, 2005
- Record last updated
- Aug 14, 2013 (not updated in 13 years: call before relying on the address or phone)
- Fax
- (865) 470-9190
- Medicaid ID
- 3641918 TN
- Medicare enrollment
- Enrolled (PECOS I20051219000896); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 9,060 in Tennessee → Look up another NPI →
Also registered at 7503 S Northshore Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Julia Abraham, MDFamily Medicine Physician1417417403
- Robert Burton, D.O.Internal Medicine Physician1114213253
- Krishna Detroja, DOFamily Medicine Physician1467034744
- Anthony Florian, M.D.Family Medicine Physician1962500819
- Amy Forsee, M.D.Family Medicine Physician1457459315
- Justin Jenkins, DOFamily Medicine Physician1457791733
Verify Mary Susan Isaac in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Tennessee board licenses this profession
Search for license 11625Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
35% fewer Medicare Part D claims than the average family nurse practitioner in 2024
844 Medicare Part D claims for 227 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D. Brand-name drugs were 18% of claims. 15 claims were for opioids.
Most prescribed
- Levothyroxine Sodium40 claims
- Atorvastatin Calcium36 claims
- Pantoprazole Sodium29 claims
- Rosuvastatin Calcium29 claims
- Azithromycin24 claims
- Amlodipine Besylate19 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): 95.7 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: $625.36
32 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 99,489 providers of this specialty with any payment received $650.95 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.
Bills Medicare through one group practice
- Uhs Primary Care LLCKnoxville, TN
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mary Susan Isaac among 9,060 family nurse practitioner records in Tennessee
Mary Susan Isaac, ANP is one of 9,060 family nurse practitioner records with a practice address in Tennessee. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 98% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 61% of these records are
- Graduated2005 · median 2017 among the 5,523 with a school on file
- Record last updated2013 · 40% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LF0000X and a Tennessee practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
737 family nurse practitioner records list a practice address in Knoxville
They are 737 of the 14,339 NPPES records with a practice address in Knoxville, and 9,060 family nurse practitioner records in Tennessee.
All 9,060 in Tennessee → Every provider in Knoxville → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Keela Bailey, MSN, APRN, FNP-BCKnoxville, TN 379191407824014
- Mary Suzanne Biggs, FNP-CKnoxville, TN 379191508913237
- Cathy Hammons, APRN, MSN, FNP, BCKnoxville, TN 379191861483943
- Mary Harlan, FNPKnoxville, TN 379191407874860
- James Kilmer, FNPKnoxville, TN 379191366608887
- Kristy Klena, NPKnoxville, TN 379191508945817
- Sharon Knox, FNPCKnoxville, TN 379191942239728
- Lyubov Lee, FNPKnoxville, TN 379191013103969
Common questions
What is Mary Susan Isaac, ANP's NPI number?
Mary Susan Isaac, ANP's National Provider Identifier (NPI) is 1538143961, issued on Nov 30, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Mary Susan Isaac, ANP located?
The NPPES record lists a practice address at 7503 S Northshore Dr, Knoxville, TN, 37919. Phone: (865) 531-1300. Providers update this record themselves, so call before visiting.
How can I verify Mary Susan Isaac, ANP's license?
NPPES lists Tennessee license number 11625, as entered by the provider. Search the Tennessee board that licenses this profession; the NPPES record confirms identity only.
How much does Mary Susan Isaac, ANP prescribe under Medicare Part D?
In 2024, Mary Susan Isaac, ANP had 844 Medicare Part D claims for 227 beneficiaries; the average among family nurse practitioner prescribers was 1,305. Part D covers Medicare prescriptions only.
What is Mary Susan Isaac, ANP's MIPS final score?
The 2023 MIPS final score is 95.7 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.