Mary A. Merlo, APRN, CNP
Nurse Practitioner · Orland Park, IL
Mary A. Merlo, APRN, CNP is a nurse practitioner with a practice address in Orland Park, Illinois, and NPI 1962892232, issued on Jan 26, 2015. Check the license (Illinois 277000500, as entered in NPPES) with the Illinois board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Mary A. Merlo
- Credential
- APRN, CNP
- Primary taxonomy
- Nurse Practitioner 363L00000X
- License number
- 277000500 IL
Self-reported in NPPES; status is on the state search - Practice location
- 15300 West Ave Ste 223, Orland Park, IL 60462
- Phone
- (708) 923-7874
- Enumerated
- Jan 26, 2015
- Record last updated
- Dec 1, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (708) 923-7876
- Medicare enrollment
- Enrolled (PECOS I20151005002834); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest nurse practitioner records → All 4,892 in Illinois → Look up another NPI →
Also registered at 15300 West Ave Ste 223
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Angela Robinson, DNP, APRN, FNP-CNurse Practitioner1275110751
- Ashley Schaefer, MDFamily Medicine Physician1922758424
Verify Mary A. Merlo in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Illinois board licenses this profession
Search for license 277000500Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
5.0 times the Medicare Part D claims of the average nurse practitioner in 2024
5,510 Medicare Part D claims for 652 beneficiaries, against an average of 1,109 among the 54,319 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims. 24 claims were for opioids.
Most prescribed
- Levothyroxine Sodium460 claims
- Atorvastatin Calcium347 claims
- Pantoprazole Sodium232 claims
- Lisinopril226 claims
- Amlodipine Besylate220 claims
- Omeprazole220 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): 94.1 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).
Industry payments in 2024: $102.48
1 payment: food and beverage; the largest payer was Exact Sciences Corporation. The 38,884 providers of this specialty with any payment received $791.64 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
- Central Dupage Physician GroupOrland Park, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mary A. Merlo among 4,892 nurse practitioner records in Illinois
Mary A. Merlo, APRN, CNP is one of 4,892 nurse practitioner records with a practice address in Illinois. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 31% of them.
- NPI issued2015 · 31% of these records are older, 64% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated2013 · median 2018 among the 3,389 with a school on file
- Record last updated2021 · 36% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363L00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
45 nurse practitioner records list a practice address in Orland Park
They are 45 of the 1,925 NPPES records with a practice address in Orland Park, and 4,892 nurse practitioner records in Illinois.
All 4,892 in Illinois → Every provider in Orland Park → Nurse Practitioner nationwide →
The 8 nurse practitioner records with the nearest ZIP codes
- Cheryl Boss, ANP-CNPOrland Park, IL 604621760436109
- Raquel Brillante, CNPOrland Park, IL 604621053320697
- Janet Burda, APRN, CNSOrland Park, IL 604621962827881
- Regina Chorley, APRN, CNPOrland Park, IL 604621528083342
- Holly Clark, N.P.Orland Park, IL 604621205823093
- Maki Cronin, APRN, CNPOrland Park, IL 604621558899377
- Carol Ingrisano, NPOrland Park, IL 604621205983996
- Christina Minic, APN, CNPOrland Park, IL 604621679893721
Common questions
What is Mary A. Merlo, APRN, CNP's NPI number?
Mary A. Merlo, APRN, CNP's National Provider Identifier (NPI) is 1962892232, issued on Jan 26, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Mary A. Merlo, APRN, CNP located?
The NPPES record lists a practice address at 15300 West Ave Ste 223, Orland Park, IL, 60462. Phone: (708) 923-7874. Providers update this record themselves, so call before visiting.
How can I verify Mary A. Merlo, APRN, CNP's license?
NPPES lists Illinois license number 277000500, as entered by the provider. Search the Illinois board that licenses this profession; the NPPES record confirms identity only.
How much does Mary A. Merlo, APRN, CNP prescribe under Medicare Part D?
In 2024, Mary A. Merlo, APRN, CNP had 5,510 Medicare Part D claims for 652 beneficiaries; the average among nurse practitioner prescribers was 1,109. Part D covers Medicare prescriptions only.
What is Mary A. Merlo, APRN, CNP's MIPS final score?
The 2023 MIPS final score is 94.1 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.