Philip Edward Siefken, M.D.
Pediatrics Physician · Greenville, IL
Philip Edward Siefken, M.D. is a pediatrics physician with a practice address in Greenville, Illinois, and NPI 1689629107, issued on May 23, 2006. Check the license (Illinois 036088335, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Philip Edward Siefken
- Credential
- M.D.
- Primary taxonomy
- Pediatrics Physician 208000000X
- License number
- 036088335 IL
Self-reported in NPPES; status is on the state search - Practice location
- 1000 Red Ball Trl, Greenville, IL 62246
- Phone
- (618) 664-1240
- Enumerated
- May 23, 2006
- Record last updated
- Jan 7, 2026
- Fax
- (618) 690-2189
- Medicare enrollment
- Enrolled (PECOS I20060809000182); accepts Medicare assignment
- Medical or professional school
- University Of Illinois College Of Med (Chi/Peor/Rock/Chm-Urb), 1990
- Entity
- Type 1 · individual
8 nearest pediatrics physician records → All 3,176 in Illinois → Look up another NPI →
Also registered at 1000 Red Ball Trl
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kelsey Hopkins, M.D.Family Medicine Physician1508012527
- Caleb MulhollandPhysician Assistant1609589506
- Angelica WehrleNurse Practitioner1912544420
Verify Philip Edward Siefken in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIllinois Department of Financial and Professional Regulation
Search for license 036088335Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
19.1 times the Medicare Part D claims of the average pediatrics physician in 2024
7,167 Medicare Part D claims for 414 beneficiaries, against an average of 375 among the 5,609 providers of this specialty who prescribed in Part D. Brand-name drugs were 15% of claims. 132 claims were for opioids.
Most prescribed
- Atorvastatin Calcium406 claims
- Levothyroxine Sodium388 claims
- Lisinopril274 claims
- Metoprolol Succinate239 claims
- Gabapentin180 claims
- Metformin Hcl170 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): 91.8 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).
Bills Medicare through one group practice
- Greenville Family Medicine, LLCGreenville, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Philip Edward Siefken among 3,176 pediatrics physician records in Illinois
Philip Edward Siefken, M.D. is one of 3,176 pediatrics physician records with a practice address in Illinois. 32% 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 8% of them.
- NPI issued2006 · 8% of these records are older, 59% newer
- In a Medicare fileYes · 32% of these records are
- In the CMS Doctors and Clinicians fileYes · 7% of these records are
- Graduated1990 · median 2010 among the 235 with a school on file
- Record last updated2026 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208000000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Pediatrics Physician providers in Illinois
There are 3,176 pediatrics physician records in Illinois.
All 3,176 in Illinois → Every provider in Greenville → Pediatrics Physician nationwide →
The 8 pediatrics physician records with the nearest ZIP codes
- Debra Feldott-Johnson, MDHighland, IL 622491184616286
- Joseph Cangas, M.D.Columbia, IL 622361295795318
- Mohammad Reza AshrafCollinsville, IL 622341033208897
- Li Ling Lai, MDCollinsville, IL 622341114901725
- Sarah O'Grady, M.D.Collinsville, IL 622341740415587
- Gretchen Sander, M.D.Collinsville, IL 622341427256486
- Kristin WilmesMascoutah, IL 622581265706337
- Prem Dua, MDChester, IL 622331952399396
Common questions
What is Philip Edward Siefken, M.D.'s NPI number?
Philip Edward Siefken, M.D.'s National Provider Identifier (NPI) is 1689629107, issued on May 23, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Philip Edward Siefken, M.D. located?
The NPPES record lists a practice address at 1000 Red Ball Trl, Greenville, IL, 62246. Phone: (618) 664-1240. Providers update this record themselves, so call before visiting.
How can I verify Philip Edward Siefken, M.D.'s license?
NPPES lists Illinois license number 036088335, as entered by the provider. Search the Illinois Department of Financial and Professional Regulation at https://idfpr.illinois.gov/checklicense.html. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Philip Edward Siefken, M.D. prescribe under Medicare Part D?
In 2024, Philip Edward Siefken, M.D. had 7,167 Medicare Part D claims for 414 beneficiaries; the average among pediatrics physician prescribers was 375. Part D covers Medicare prescriptions only.
What is Philip Edward Siefken, M.D.'s MIPS final score?
The 2023 MIPS final score is 91.8 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.