Cynthia H. Obrien, CRNP
Nurse Practitioner · Largo, MD
Cynthia H. Obrien, CRNP is a nurse practitioner with a practice address in Largo, Maryland, and NPI 1912075359, issued on Dec 2, 2006. Check the license (Maryland R093367, as entered in NPPES) with the Maryland board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Cynthia H. Obrien
- Credential
- CRNP
- Primary taxonomy
- Nurse Practitioner 363L00000X
- License number
- R093367 MD
Self-reported in NPPES; status is on the state search - Practice location
- 1221 Mercantile LN, Largo, MD 20774
- Phone
- (301) 618-5929
- Enumerated
- Dec 2, 2006
- Record last updated
- Jun 2, 2021 (not updated in 5 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest nurse practitioner records → All 1,248 in Maryland → Look up another NPI →
Also registered at 1221 Mercantile LN
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Cheryl Abbott, RN,BSN,CM-CCase Management Registered Nurse1366743122
- Grace AdumanisaResearch Study Specialist1104663145
- Cielito Aguinaldo, MDInternal Medicine Physician1063585347
- Elma Alston, LCSW-CClinical Social Worker1629300488
- Bridget AnyiwoPharmacist1326228529
- Brian Armstrong, MDOphthalmology Physician1285781179
Verify Cynthia H. Obrien in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Maryland board licenses this profession
Search for license R093367Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
51% fewer Medicare Part D claims than the average nurse practitioner in 2024
538 Medicare Part D claims for 137 beneficiaries, against an average of 1,109 among the 54,319 providers of this specialty who prescribed in Part D. Brand-name drugs were 52% of claims.
Most prescribed
- Glipizide65 claims
- Ultra-Fine Short Pen Needle59 claims
- Insulin Glargine-Yfgn56 claims
- Humulin 70/30 Kwikpen47 claims
- Humulin N44 claims
- Humalog Kwikpen U-10038 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: $144.56
1 payment: food and beverage; the largest payer was Dexcom, Inc. 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.
Cynthia H. Obrien among 1,248 nurse practitioner records in Maryland
Cynthia H. Obrien, CRNP is one of 1,248 nurse practitioner records with a practice address in Maryland. 68% 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 4% of them.
- NPI issued2006 · 4% of these records are older, 74% newer
- In a Medicare fileYes · 68% of these records are
- In the CMS Doctors and Clinicians fileNo · 52% of these records are
- Record last updated2021 · 48% 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 Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
8 nurse practitioner records list a practice address in Largo
They are 8 of the 651 NPPES records with a practice address in Largo, and 1,248 nurse practitioner records in Maryland.
All 1,248 in Maryland → Every provider in Largo → Nurse Practitioner nationwide →
The 8 nurse practitioner records with the nearest ZIP codes
- Charles Collins, R.N.Upper Marlboro, MD 207741740414036
- Risikat Dawodu, NPUpper Marlboro, MD 207741588359111
- Isaac Donkoh, NPUpper Marlboro, MD 207741992211502
- Maria Lamont, NPLargo, MD 207741710764907
- Lori MazeUpper Marlboro, MD 207741356714372
- Rokhaya Mbaye, NPLargo, MD 207741073389821
- Flora Ndaka-Nusta, FNPUpper Marlboro, MD 207741043848716
- Adeola Omoruyi, CRNPLargo, MD 207741689430936
Common questions
What is Cynthia H. Obrien, CRNP's NPI number?
Cynthia H. Obrien, CRNP's National Provider Identifier (NPI) is 1912075359, issued on Dec 2, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Cynthia H. Obrien, CRNP located?
The NPPES record lists a practice address at 1221 Mercantile LN, Largo, MD, 20774. Phone: (301) 618-5929. Providers update this record themselves, so call before visiting.
How can I verify Cynthia H. Obrien, CRNP's license?
NPPES lists Maryland license number R093367, as entered by the provider. Search the Maryland board that licenses this profession; the NPPES record confirms identity only.
How much does Cynthia H. Obrien, CRNP prescribe under Medicare Part D?
In 2024, Cynthia H. Obrien, CRNP had 538 Medicare Part D claims for 137 beneficiaries; the average among nurse practitioner prescribers was 1,109. 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.