Grace Anne Siekman, P.A.-C
Physician Assistant · Sun City, AZ
Grace Anne Siekman, P.A.-C is a physician assistant with a practice address in Sun City, Arizona, and NPI 1316032683, issued on Oct 4, 2006. Check the license (Arizona 3632, as entered in NPPES) with the Arizona board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Grace Anne Siekman
- Credential
- P.A.-C
- Primary taxonomy
- Physician Assistant 363A00000X
- License numbers
- 3632 AZ
994 CO
Self-reported in NPPES; status is on the state search - Practice location
- 10401 W Thunderbird Blvd, Sun City, AZ 85351
- Phone
- (623) 876-5366
- Enumerated
- Oct 4, 2006
- Record last updated
- Jul 18, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (623) 974-7520
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 3,666 in Arizona → Look up another NPI →
Also registered at 10401 W Thunderbird Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Grace Anne Siekman in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Arizona board licenses this profession
Search for license 3632Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
97% fewer Medicare Part D claims than the average physician assistant in 2024
28 Medicare Part D claims for 20 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D.
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): 76.1 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.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Grace Anne Siekman among 3,666 physician assistant records in Arizona
Grace Anne Siekman, P.A.-C is one of 3,666 physician assistant records with a practice address in Arizona. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 3% of them.
- NPI issued2006 · 3% of these records are older, 84% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileNo · 60% of these records are
- Record last updated2011 · 35% 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 Arizona practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
42 physician assistant records list a practice address in Sun City
They are 42 of the 813 NPPES records with a practice address in Sun City, and 3,666 physician assistant records in Arizona.
All 3,666 in Arizona → Every provider in Sun City → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Becky Cooley, PA-CSun City, AZ 853511689627374
- Michelle Hitchcock, PA-CSun City, AZ 853511467492637
- Justin Lovich, PA-CSun City, AZ 853511184026155
- Stephanie McGarvey, P.A-CSun City, AZ 853511053344044
- Lauren Miiller, PASun City, AZ 853511922474022
- Celina Moretta Lubbehusen, PA-CSun City, AZ 853511063895423
- Terrie Pasch, PA-CSun City, AZ 853511447536180
- Carlos Pence, PA-CSun City, AZ 853511477839041
Common questions
What is Grace Anne Siekman, P.A.-C's NPI number?
Grace Anne Siekman, P.A.-C's National Provider Identifier (NPI) is 1316032683, issued on Oct 4, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Grace Anne Siekman, P.A.-C located?
The NPPES record lists a practice address at 10401 W Thunderbird Blvd, Sun City, AZ, 85351. Phone: (623) 876-5366. Providers update this record themselves, so call before visiting.
How can I verify Grace Anne Siekman, P.A.-C's license?
NPPES lists Arizona license number 3632, as entered by the provider. Search the Arizona board that licenses this profession; the NPPES record confirms identity only.
How much does Grace Anne Siekman, P.A.-C prescribe under Medicare Part D?
In 2024, Grace Anne Siekman, P.A.-C had 28 Medicare Part D claims for 20 beneficiaries; the average among physician assistant prescribers was 830. Part D covers Medicare prescriptions only.
What is Grace Anne Siekman, P.A.-C's MIPS final score?
The 2023 MIPS final score is 76.1 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.