NPPES file of Aug 9, 2026

Heather Sieminkewicz, PA

Physician Assistant · Indiana, PA

Heather Sieminkewicz, PA is a physician assistant with a practice address in Indiana, Pennsylvania, and NPI 1558770701, issued on Aug 12, 2014. Check the license (Pennsylvania MA056909, as entered in NPPES) with the Pennsylvania board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1558770701
Name
Heather Sieminkewicz
Credential
PA
Primary taxonomy
Physician Assistant 363A00000X
License number
MA056909 PA
Self-reported in NPPES; status is on the state search
Practice location
120 Irmc Dr Ste 130, Indiana, PA 15701
Phone
(724) 471-7100
Enumerated
Aug 12, 2014
Record last updated
Feb 23, 2021 (not updated in 5 years: call before relying on the address or phone)
Fax
(724) 471-7111
Medicare enrollment
Enrolled (PECOS I20150225000657); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 120 Irmc Dr Ste 130

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Lindsey Smail, PA-CMedical Physician Assistant1740439454
  2. Therese Wilson, MDDermatology Physician1972581858

Verify Heather Sieminkewicz in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Pennsylvania board licenses this profession
    Search for license MA056909
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the Pennsylvania license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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2.8 times the Medicare Part D claims of the average physician assistant in 2024

2,365 Medicare Part D claims for 818 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims.

  1. Heather Sieminkewicz2,365
  2. Specialty average830

Most prescribed

  1. Ketoconazole438 claims
  2. Clobetasol Propionate287 claims
  3. Triamcinolone Acetonide183 claims
  4. Hydrocortisone164 claims
  5. Betamethasone Dipropionate159 claims
  6. Doxycycline Hyclate146 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 practice group's MIPS final score for 2023 (Medicare payment program): 83.3 of 100

The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.

  1. Qualityout of 100 · 30% of the final score79.4
  2. Costout of 100 · 30%65.8
  3. Promoting interoperabilityout of 100 · 25%99.0
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).

Industry payments in 2024: $1,430.50

78 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie 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.

  1. Heather Sieminkewicz$1,430.50
  2. Specialty average$841.65

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

  1. Forefront Dermatology SCPittsburgh, PA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Heather Sieminkewicz among 8,020 physician assistant records in Pennsylvania

Heather Sieminkewicz, PA 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 2014, is newer than 38% of them.

  • NPI issued2014 · 38% of these records are older, 59% newer
  • In a Medicare fileYes · 80% of these records are
  • In the CMS Doctors and Clinicians fileYes · 66% of these records are
  • Graduated2014 · 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).

29 physician assistant records list a practice address in Indiana

They are 29 of the 1,003 NPPES records with a practice address in Indiana, and 8,020 physician assistant records in Pennsylvania.

The 8 physician assistant records with the nearest ZIP codes

  1. Tabitha Conrad, PA-CIndiana, PA 157011184684623
  2. Amber Dubics, PA-CIndiana, PA 157011942730601
  3. Rebecca Gamble, PACIndiana, PA 157011245238252
  4. Sydney Harteis, PAIndiana, PA 157011366095341
  5. Michael Hegemann, PA-CIndiana, PA 157011730662156
  6. Alan Keefe, MPA-CIndiana, PA 157011871553560
  7. Shae Lowry, PA-CIndiana, PA 157011740619311
  8. Shawna Marshall, PA-CIndiana, PA 157011144304031

Common questions

What is Heather Sieminkewicz, PA's NPI number?

Heather Sieminkewicz, PA's National Provider Identifier (NPI) is 1558770701, issued on Aug 12, 2014. An NPI identifies a provider in billing; it is not a license.

Where is Heather Sieminkewicz, PA located?

The NPPES record lists a practice address at 120 Irmc Dr Ste 130, Indiana, PA, 15701. Phone: (724) 471-7100. Providers update this record themselves, so call before visiting.

How can I verify Heather Sieminkewicz, PA's license?

NPPES lists Pennsylvania license number MA056909, as entered by the provider. Search the Pennsylvania board that licenses this profession; the NPPES record confirms identity only.

How much does Heather Sieminkewicz, PA prescribe under Medicare Part D?

In 2024, Heather Sieminkewicz, PA had 2,365 Medicare Part D claims for 818 beneficiaries; the average among physician assistant prescribers was 830. Part D covers Medicare prescriptions only.

What is Heather Sieminkewicz, PA's MIPS final score?

The 2023 MIPS final score is 83.3 of 100, reported for the practice group. 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.