Maria Catalina Merrick, DO
Infectious Disease Physician · Springfield, IL
Maria Catalina Merrick, DO is an infectious disease physician with a practice address in Springfield, Illinois, and NPI 1629361829, issued on May 20, 2011. Check the license (Illinois 036140950, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Maria Catalina Merrick
- Credential
- DO
- Primary taxonomy
- Infectious Disease Physician 207RI0200X
- License number
- 036140950 IL
Self-reported in NPPES; status is on the state search - Practice location
- 900 N 1St St, Springfield, IL 62702
- Phone
- (217) 528-7541
- Enumerated
- May 20, 2011
- Record last updated
- Feb 24, 2020 (not updated in 6 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20220920003085); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest infectious disease physician records → All 464 in Illinois → Look up another NPI →
Also registered at 900 N 1St St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Demi AlbrachtNurse Practitioner1598682296
- Neha Amin, M.D.Gynecology Physician1619974532
- Rachael Ashcraft, MDSurgery Physician1912152125
- Mary Atwood, R.N., ACNPAcute Care Nurse Practitioner1811945314
- Heather Beal, M.D.Obstetrics & Gynecology Physician1912940545
- Aaron Brewer, M.D.Surgery Physician1679794523
Verify Maria Catalina Merrick 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 036140950Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
5.1 times the Medicare Part D claims of the average infectious disease physician in 2024
3,535 Medicare Part D claims for 130 beneficiaries, against an average of 689 among the 7,388 providers of this specialty who prescribed in Part D. Brand-name drugs were 35% of claims.
Most prescribed
- Biktarvy351 claims
- Gabapentin177 claims
- Atorvastatin Calcium156 claims
- Lisinopril104 claims
- Albuterol Sulfate Hfa102 claims
- Amlodipine Besylate98 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.
Industry payments in 2024: $113.68
1 payment: food and beverage; the largest payer was Gilead Sciences, Inc. The 3,895 providers of this specialty with any payment received $4,362.19 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
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
- Zion Specialty PLLCPhoenix, AZ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Maria Catalina Merrick among 464 infectious disease physician records in Illinois
Maria Catalina Merrick, DO is one of 464 infectious disease physician records with a practice address in Illinois. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2011, is newer than 66% of them.
- NPI issued2011 · 66% of these records are older, 32% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 67% of these records are
- Graduated2011 · median 2004 among the 311 with a school on file
- Record last updated2020 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RI0200X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Infectious Disease Physician providers in Illinois
There are 464 infectious disease physician records in Illinois.
All 464 in Illinois → Every provider in Springfield → Infectious Disease Physician nationwide →
The 8 infectious disease physician records with the nearest ZIP codes
- Zainab AlnafoosiSpringfield, IL 627021124401070
- Salvador Fernandez, MDSpringfield, IL 627021659997294
- Sandesh Gyawali, MBBSSpringfield, IL 627021336874189
- Lyndsey Heise, M.D.Springfield, IL 627021700268216
- Afshan Iqbal, MDSpringfield, IL 627021598241226
- Ahmed Khan, MBBS, MDSpringfield, IL 627021861947871
- Janak Koirala, M.D.Springfield, IL 627021316935315
- Vidhya Prakash, M.D.Springfield, IL 627021528285798
Common questions
What is Maria Catalina Merrick, DO's NPI number?
Maria Catalina Merrick, DO's National Provider Identifier (NPI) is 1629361829, issued on May 20, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Maria Catalina Merrick, DO located?
The NPPES record lists a practice address at 900 N 1St St, Springfield, IL, 62702. Phone: (217) 528-7541. Providers update this record themselves, so call before visiting.
How can I verify Maria Catalina Merrick, DO's license?
NPPES lists Illinois license number 036140950, 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 Maria Catalina Merrick, DO prescribe under Medicare Part D?
In 2024, Maria Catalina Merrick, DO had 3,535 Medicare Part D claims for 130 beneficiaries; the average among infectious disease physician prescribers was 689. 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.