Mary B. O'Brien, RN-C, FNP, MS
Family Nurse Practitioner · Allendale, MI
Mary B. O'Brien, RN-C, FNP, MS is a family nurse practitioner with a practice address in Allendale, Michigan, and NPI 1336276864, issued on Feb 28, 2007. Check the license (Michigan 4704107338, as entered in NPPES) with the Michigan board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Mary B. O'Brien
- Credential
- RN-C, FNP, MS
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License number
- 4704107338 MI
Self-reported in NPPES; status is on the state search - Practice location
- 10383 42ND Ave, Allendale, MI 49401
- Phone
- (616) 252-6030
- Enumerated
- Feb 28, 2007
- Record last updated
- Feb 21, 2012 (not updated in 14 years: call before relying on the address or phone)
- Fax
- (616) 252-6035
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 5,356 in Michigan → Look up another NPI →
Also registered at 10383 42ND Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Emily Gerardy, PA-CMedical Physician Assistant1932368693
- Rocio SanchezFamily Nurse Practitioner1649821786
Verify Mary B. O'Brien in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Michigan board licenses this profession
Search for license 4704107338Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Industry payments in 2024: $23.59
1 payment: food and beverage; the largest payer was Abbvie Inc. The 99,489 providers of this specialty with any payment received $650.95 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.
Mary B. O'Brien among 5,356 family nurse practitioner records in Michigan
Mary B. O'Brien, RN-C, FNP, MS is one of 5,356 family nurse practitioner records with a practice address in Michigan. 78% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 7% of them.
- NPI issued2007 · 7% of these records are older, 90% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileNo · 61% of these records are
- Record last updated2012 · 40% 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 Michigan practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
6 family nurse practitioner records list a practice address in Allendale
They are 6 of the 214 NPPES records with a practice address in Allendale, and 5,356 family nurse practitioner records in Michigan.
All 5,356 in Michigan → Every provider in Allendale → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Carol Finlayson, FNPAllendale, MI 494011740264001
- Joreine Patrick Landoy, FNP-BCAllendale, MI 494011568229243
- Samantha Mette, FNP-CAllendale, MI 494011205477924
- Rocio SanchezAllendale, MI 494011649821786
- Eric Tornga, FNP-CAllendale, MI 494011952908139
- Shanae Bartlett, NP-CCoopersville, MI 494041073904983
- Leah Boeve, FNPCoopersville, MI 494041750101895
- Katelin Dekker, NPFennville, MI 494081477187813
Common questions
What is Mary B. O'Brien, RN-C, FNP, MS's NPI number?
Mary B. O'Brien, RN-C, FNP, MS's National Provider Identifier (NPI) is 1336276864, issued on Feb 28, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Mary B. O'Brien, RN-C, FNP, MS located?
The NPPES record lists a practice address at 10383 42ND Ave, Allendale, MI, 49401. Phone: (616) 252-6030. Providers update this record themselves, so call before visiting.
How can I verify Mary B. O'Brien, RN-C, FNP, MS's license?
NPPES lists Michigan license number 4704107338, as entered by the provider. Search the Michigan board that licenses this profession; the NPPES record confirms identity 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.