Diana Carol McNulty, MD
Internal Medicine Physician · Freeport, IL
Diana Carol McNulty, MD is an internal medicine physician with a practice address in Freeport, Illinois, and NPI 1215900105, issued on Feb 10, 2006. Check the license (Illinois 036103840, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Diana Carol McNulty
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 036103840 IL
Self-reported in NPPES; status is on the state search - Practice location
- 1010 Fairway Dr, Freeport, IL 61032
- Phone
- (815) 599-7880
- Enumerated
- Feb 10, 2006
- Record last updated
- Jul 31, 2026
- Medicaid ID
- 036103840 IL
- Medicare enrollment
- Enrolled (PECOS I20100205000081); accepts Medicare assignment
- Medical or professional school
- Oregon Health Sciences University School Of Medicine, 1991
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 7,238 in Illinois → Look up another NPI →
Also registered at 1010 Fairway Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Lindsay Bader, PTPhysical Medicine & Rehabilitation Physician1396977864
- Megan Bauer, FNP-BCFamily Nurse Practitioner1811680333
- Cynthia Baxter, PTAPhysical Therapy Assistant1437903853
- Tamisha Bonvillain, FNP-BCFamily Nurse Practitioner1073163838
- Tracy Clay, NPFamily Nurse Practitioner1841347069
- John Cook, APRN,BCFamily Nurse Practitioner1467426445
Verify Diana Carol McNulty 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 036103840Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.8 times the Medicare Part D claims of the average internal medicine physician in 2024
12,027 Medicare Part D claims for 731 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims. 453 claims were for opioids.
Most prescribed
- Atorvastatin Calcium719 claims
- Lisinopril433 claims
- Levothyroxine Sodium427 claims
- Amlodipine Besylate304 claims
- Pantoprazole Sodium297 claims
- Metoprolol Succinate296 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 practice group's MIPS final score for 2023 (Medicare payment program): 82.6 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).
Bills Medicare through 2 group practices
- Freeport Regional Health Care FoundationFreeport, IL
- Select Rehabilitation, LLCGlenview, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Diana Carol McNulty among 7,238 internal medicine physician records in Illinois
Diana Carol McNulty, MD is one of 7,238 internal medicine physician records with a practice address in Illinois. 73% 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 7% of them.
- NPI issued2006 · 7% of these records are older, 61% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 50% of these records are
- Graduated1991 · median 2003 among the 3,580 with a school on file
- Record last updated2026 · 47% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
7 internal medicine physician records list a practice address in Freeport
They are 7 of the 480 NPPES records with a practice address in Freeport, and 7,238 internal medicine physician records in Illinois.
All 7,238 in Illinois → Every provider in Freeport → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Diann Bennett, MDFreeport, IL 610321326010083
- Renu Dosi, M.D.Freeport, IL 610321073522140
- Alan Esker, MDFreeport, IL 610321831159698
- Eugene Gaertner, MDFreeport, IL 610321053387472
- Marie Heimerdinger, M.D.Freeport, IL 610321952400442
- William Sharelis, MDFreeport, IL 610321487620803
- Debbie Cihak, M.D.Galena, IL 610361417908906
- Richard Farrell, M.D.Galena, IL 610361861588360
Common questions
What is Diana Carol McNulty, MD's NPI number?
Diana Carol McNulty, MD's National Provider Identifier (NPI) is 1215900105, issued on Feb 10, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Diana Carol McNulty, MD located?
The NPPES record lists a practice address at 1010 Fairway Dr, Freeport, IL, 61032. Phone: (815) 599-7880. Providers update this record themselves, so call before visiting.
How can I verify Diana Carol McNulty, MD's license?
NPPES lists Illinois license number 036103840, 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 Diana Carol McNulty, MD prescribe under Medicare Part D?
In 2024, Diana Carol McNulty, MD had 12,027 Medicare Part D claims for 731 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Diana Carol McNulty, MD's MIPS final score?
The 2023 MIPS final score is 82.6 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.