Mercedes A. Sundy, PA-C
Physician Assistant · Waterford, PA
Mercedes A. Sundy, PA-C is a physician assistant with a practice address in Waterford, Pennsylvania, and NPI 1891062733, issued on Nov 21, 2011. Check the license (Pennsylvania MA056820, as entered in NPPES) with the Pennsylvania board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Mercedes A. Sundy
- Credential
- PA-C
- Primary taxonomy
- Physician Assistant 363A00000X
- License numbers
- MA056820 PA
OA005952 PA
Self-reported in NPPES; status is on the state search - Practice location
- 991 Route 19 N Ste B, Waterford, PA 16441
- Phone
- (814) 877-8790
- Enumerated
- Nov 21, 2011
- Record last updated
- Nov 29, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (814) 877-8792
- Medicare enrollment
- Enrolled (PECOS I20140813001060); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 8,020 in Pennsylvania → Look up another NPI →
Also registered at 991 Route 19 N Ste B
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Carl Eby, MDFamily Medicine Physician1912986605
- Paige King, PA-CPhysician Assistant1568974889
- Nathan Moore, MDFamily Medicine Physician1497750129
- Edward OwensFamily Medicine Physician1336837699
Verify Mercedes A. Sundy in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Pennsylvania board licenses this profession
Search for license MA056820Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
27% fewer Medicare Part D claims than the average physician assistant in 2024
610 Medicare Part D claims for 150 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 27% of claims.
Most prescribed
- Metoprolol Succinate56 claims
- Entresto52 claims
- Eliquis51 claims
- Clopidogrel48 claims
- Furosemide44 claims
- Spironolactone31 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): 93.8 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: $1,925.99
42 payments; by number, the most common kind was food and beverage; the largest payer was Inari Medical, Inc. The 64,719 providers of this specialty with any payment received $841.65 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
- Saint Vincent Consultants IN Cardiovascular DiseasesErie, PA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mercedes A. Sundy among 8,020 physician assistant records in Pennsylvania
Mercedes A. Sundy, PA-C is one of 8,020 physician assistant records with a practice address in Pennsylvania. 80% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2011, is newer than 27% of them.
- NPI issued2011 · 27% of these records are older, 69% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated2010 · median 2018 among the 5,313 with a school on file
- Record last updated2021 · 42% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363A00000X and a Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
4 physician assistant records list a practice address in Waterford
They are 4 of the 58 NPPES records with a practice address in Waterford, and 8,020 physician assistant records in Pennsylvania.
All 8,020 in Pennsylvania → Every provider in Waterford → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Miranda Deering, PA-CWaterford, PA 164411316283179
- Paige King, PA-CWaterford, PA 164411568974889
- Stephanie RademacherWaterford, PA 164411114227444
- Ryan Gannon, PA-CSaegertown, PA 164331215763313
- Jennifer Majewski, PANorth East, PA 164281881693661
- Kate MosherNorth East, PA 164281801344932
- Sarah Wick, PANorth East, PA 164281215491873
- Jordan Zielinski, PA-CNorth East, PA 164281073356366
Common questions
What is Mercedes A. Sundy, PA-C's NPI number?
Mercedes A. Sundy, PA-C's National Provider Identifier (NPI) is 1891062733, issued on Nov 21, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Mercedes A. Sundy, PA-C located?
The NPPES record lists a practice address at 991 Route 19 N Ste B, Waterford, PA, 16441. Phone: (814) 877-8790. Providers update this record themselves, so call before visiting.
How can I verify Mercedes A. Sundy, PA-C's license?
NPPES lists Pennsylvania license number MA056820, as entered by the provider. Search the Pennsylvania board that licenses this profession; the NPPES record confirms identity only.
How much does Mercedes A. Sundy, PA-C prescribe under Medicare Part D?
In 2024, Mercedes A. Sundy, PA-C had 610 Medicare Part D claims for 150 beneficiaries; the average among physician assistant prescribers was 830. Part D covers Medicare prescriptions only.
What is Mercedes A. Sundy, PA-C's MIPS final score?
The 2023 MIPS final score is 93.8 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.