Sandra O'Brien, N.P.
Family Nurse Practitioner · Rockville, MD
Sandra O'Brien, N.P. is a family nurse practitioner with a practice address in Rockville, Maryland, and NPI 1932423761, issued on Mar 23, 2010. Check the license (Maryland R080218, as entered in NPPES) with the Maryland board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Sandra O'Brien
- Credential
- N.P.
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License number
- R080218 MD
Self-reported in NPPES; status is on the state search - Practice location
- 5912 Hubbard Dr, Rockville, MD 20852
- Phone
- (301) 770-1818
- Enumerated
- Mar 23, 2010
- Record last updated
- Aug 5, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (301) 576-7736
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 4,124 in Maryland → Look up another NPI →
Also registered at 5912 Hubbard Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Sandra O'Brien in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Maryland board licenses this profession
Search for license R080218Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
97% fewer Medicare Part D claims than the average family nurse practitioner in 2024
39 Medicare Part D claims for 29 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D. Brand-name drugs were 36% of claims.
Most prescribed
- Atovaquone-Proguanil Hcl26 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.
Sandra O'Brien among 4,124 family nurse practitioner records in Maryland
Sandra O'Brien, N.P. is one of 4,124 family nurse practitioner records with a practice address in Maryland. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2010, is newer than 14% of them.
- NPI issued2010 · 14% of these records are older, 84% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileNo · 58% of these records are
- Record last updated2011 · 41% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LF0000X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
146 family nurse practitioner records list a practice address in Rockville
They are 146 of the 14,353 NPPES records with a practice address in Rockville, and 4,124 family nurse practitioner records in Maryland.
All 4,124 in Maryland → Every provider in Rockville → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Sarah Barfield-Early, MSN, FNP-C, IBCLCNorth Bethesda, MD 208521124443858
- Mohamed Barry, CRNP-FNPRockville, MD 208521073987954
- Dana Fleischhacker, NPNorth Bethesda, MD 208521881066843
- Paule Joseph, FNP, PHDRockville, MD 208521780980201
- Sarah Knowlton, FNPNorth Bethesda, MD 208521558716852
- Tina Mbatia, CRNP-FAMILYRockville, MD 208521619010154
- Masooda Naim, CRNP-FRockville, MD 208521730565607
- Kimberly Nieves, FNP-BCNorth Bethesda, MD 208521497799365
Common questions
What is Sandra O'Brien, N.P.'s NPI number?
Sandra O'Brien, N.P.'s National Provider Identifier (NPI) is 1932423761, issued on Mar 23, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Sandra O'Brien, N.P. located?
The NPPES record lists a practice address at 5912 Hubbard Dr, Rockville, MD, 20852. Phone: (301) 770-1818. Providers update this record themselves, so call before visiting.
How can I verify Sandra O'Brien, N.P.'s license?
NPPES lists Maryland license number R080218, as entered by the provider. Search the Maryland board that licenses this profession; the NPPES record confirms identity only.
How much does Sandra O'Brien, N.P. prescribe under Medicare Part D?
In 2024, Sandra O'Brien, N.P. had 39 Medicare Part D claims for 29 beneficiaries; the average among family nurse practitioner prescribers was 1,305. 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.