Ann Jacob
Psychiatry Physician · Springfield, IL
Ann Jacob is a psychiatry physician with a practice address in Springfield, Illinois, and NPI 1619396207, issued on Apr 10, 2014. Check the license (Illinois 125069375, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Ann Jacob
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- 125069375 IL
Self-reported in NPPES; status is on the state search - Practice location
- 901 W Jefferson St, Springfield, IL 62702
- Phone
- (312) 513-0307
- Enumerated
- Apr 10, 2014
- Record last updated
- Sep 26, 2018 (not updated in 8 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20190801001872); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 2,147 in Illinois → Look up another NPI →
Also registered at 901 W Jefferson St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jeffrey Bennett, M.D.Psychiatry Physician1265410898
- Eric Black, M.D.Psychiatry Physician1245323005
- Abigail Buoy, M.D.Psychiatry Physician1619230992
- Arindam Chakrabarty, M.D.Psychiatry Physician1063896819
- Richard Chiola, LCPCProfessional Counselor1043570716
- Rodney Curtis, M.D.Psychiatry Physician1477531002
Verify Ann Jacob 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 125069375Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
55% fewer Medicare Part D claims than the average psychiatry physician in 2024
451 Medicare Part D claims for 122 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D. Brand-name drugs were 3% of claims.
Most prescribed
- Quetiapine Fumarate33 claims
- Olanzapine27 claims
- Benztropine Mesylate25 claims
- Hydroxyzine Hcl23 claims
- Aripiprazole22 claims
- Gabapentin19 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
- Illinois Center For Neurological And Behavioral Medicine LtdDes Plaines, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ann Jacob among 2,147 psychiatry physician records in Illinois
Ann Jacob is one of 2,147 psychiatry physician records with a practice address in Illinois. 69% 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 66% of them.
- NPI issued2014 · 66% of these records are older, 32% newer
- In a Medicare fileYes · 69% of these records are
- In the CMS Doctors and Clinicians fileYes · 41% of these records are
- Graduated2019 · median 2004 among the 877 with a school on file
- Record last updated2018 · 53% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084P0800X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
96 psychiatry physician records list a practice address in Springfield
They are 96 of the 4,997 NPPES records with a practice address in Springfield, and 2,147 psychiatry physician records in Illinois.
All 2,147 in Illinois → Every provider in Springfield → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Jeffrey Bennett, M.D.Springfield, IL 627021265410898
- Shyam Bhat, M.D.Springfield, IL 627021447235338
- Eric Black, M.D.Springfield, IL 627021245323005
- Raymond Bland, M.D.Springfield, IL 627021881653103
- Kathleen Bottum, M.D.Springfield, IL 627021124003025
- Karen Broquet, M.D.Springfield, IL 627021750366654
- Rodney Curtis, M.D.Springfield, IL 627021477531002
- Lillian Houston, M.D.Springfield, IL 627021093919714
Common questions
What is Ann Jacob's NPI number?
Ann Jacob's National Provider Identifier (NPI) is 1619396207, issued on Apr 10, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Ann Jacob located?
The NPPES record lists a practice address at 901 W Jefferson St, Springfield, IL, 62702. Phone: (312) 513-0307. Providers update this record themselves, so call before visiting.
How can I verify Ann Jacob's license?
NPPES lists Illinois license number 125069375, 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 Ann Jacob prescribe under Medicare Part D?
In 2024, Ann Jacob had 451 Medicare Part D claims for 122 beneficiaries; the average among psychiatry physician prescribers was 1,000. 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.