Andrea S. Markham, PA-C
Physician Assistant · Geneva, IL
Andrea S. Markham, PA-C is a physician assistant with a practice address in Geneva, Illinois, and NPI 1558688531, issued on Apr 29, 2010. Check the license (Illinois 085-003398, as entered in NPPES) with the Illinois board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Andrea S. Markham
- Credential
- PA-C
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- 085-003398 IL
Self-reported in NPPES; status is on the state search - Practice location
- 351 Delnor Dr, Geneva, IL 60134
- Phone
- (630) 938-8550
- Enumerated
- Apr 29, 2010
- Record last updated
- Aug 8, 2013 (not updated in 13 years: call before relying on the address or phone)
- Fax
- (630) 938-8849
- Medicare enrollment
- Enrolled (PECOS I20101029001072); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 4,926 in Illinois → Look up another NPI →
Also registered at 351 Delnor Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Andrea S. Markham in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Illinois board licenses this profession
Search for license 085-003398Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
87% fewer Medicare Part D claims than the average physician assistant in 2024
105 Medicare Part D claims for 69 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. 57 claims were for opioids.
Most prescribed
- Oxycodone Hcl50 claims
- Cyclobenzaprine Hcl14 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.
Bills Medicare through one group practice
- Rush University Medical GroupChicago, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Andrea S. Markham among 4,926 physician assistant records in Illinois
Andrea S. Markham, PA-C is one of 4,926 physician assistant records with a practice address in Illinois. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2010, is newer than 22% of them.
- NPI issued2010 · 22% of these records are older, 76% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated2008 · median 2019 among the 3,407 with a school on file
- Record last updated2013 · 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 Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
31 physician assistant records list a practice address in Geneva
They are 31 of the 1,023 NPPES records with a practice address in Geneva, and 4,926 physician assistant records in Illinois.
All 4,926 in Illinois → Every provider in Geneva → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Dean Bieniak, PA-CGeneva, IL 601341386724581
- Colleen Bird, PAGeneva, IL 601341356367601
- Jennifer BolanderGeneva, IL 601341942271655
- Jean Born, PA-CGeneva, IL 601341821229501
- Stacey Brown, PAGeneva, IL 601341699940999
- Jessica Clark, PA CGeneva, IL 601341073505442
- Angela Lang, PA-CGeneva, IL 601341386832400
- Cassie Mandala, PA-CGeneva, IL 601341932383445
Common questions
What is Andrea S. Markham, PA-C's NPI number?
Andrea S. Markham, PA-C's National Provider Identifier (NPI) is 1558688531, issued on Apr 29, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Andrea S. Markham, PA-C located?
The NPPES record lists a practice address at 351 Delnor Dr, Geneva, IL, 60134. Phone: (630) 938-8550. Providers update this record themselves, so call before visiting.
How can I verify Andrea S. Markham, PA-C's license?
NPPES lists Illinois license number 085-003398, as entered by the provider. Search the Illinois board that licenses this profession; the NPPES record confirms identity only.
How much does Andrea S. Markham, PA-C prescribe under Medicare Part D?
In 2024, Andrea S. Markham, PA-C had 105 Medicare Part D claims for 69 beneficiaries; the average among physician assistant prescribers was 830. Part D covers Medicare prescriptions only.
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.