Karen Lynn Riley, CRNP
Primary Care Nurse Practitioner · Holden, MA
Karen Lynn Riley, CRNP is a primary care nurse practitioner with a practice address in Holden, Massachusetts, and NPI 1073822797, issued on Sep 29, 2010. Check the license (Massachusetts 251009, as entered in NPPES) with the Massachusetts board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Karen Lynn Riley
- Credential
- CRNP
- Primary taxonomy
- Primary Care Nurse Practitioner 363LP2300X
- License numbers
- 251009 MA
R164675 MD
Self-reported in NPPES; status is on the state search - Practice location
- 554 Salisbury Street, Holden, MA 01520
- Phone
- (443) 989-8718
- Enumerated
- Sep 29, 2010
- Record last updated
- Nov 21, 2016 (not updated in 10 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest primary care nurse practitioner records → All 376 in Massachusetts → Look up another NPI →
Verify Karen Lynn Riley in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Massachusetts board licenses this profession
Search for license 251009Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
91% fewer Medicare Part D claims than the average primary care nurse practitioner in 2024
138 Medicare Part D claims for 30 beneficiaries, against an average of 1,492 among the 5,992 providers of this specialty who prescribed in Part D. 32 claims were for opioids.
Most prescribed
- Tramadol Hcl23 claims
- Lorazepam16 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.
Karen Lynn Riley among 376 primary care nurse practitioner records in Massachusetts
Karen Lynn Riley, CRNP is one of 376 primary care nurse practitioner records with a practice address in Massachusetts. 67% 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 21% of them.
- NPI issued2010 · 21% of these records are older, 78% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileNo · 52% of these records are
- Record last updated2016 · 50% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LP2300X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Primary Care Nurse Practitioner providers in Massachusetts
There are 376 primary care nurse practitioner records in Massachusetts.
All 376 in Massachusetts → Every provider in Holden → Primary Care Nurse Practitioner nationwide →
The 8 primary care nurse practitioner records with the nearest ZIP codes
- Kelly Manchester, ARNPAuburn, MA 015011528272010
- Florence Gichuhi, NPShrewsbury, MA 015451548742364
- Mikaela LavalleeShrewsbury, MA 015451770970790
- Kate Inglesi, CNPWestborough, MA 015811164022265
- Samantha Hadley, FNP-CLeominster, MA 014531366938177
- Molly LinnaneLeominster, MA 014531972356186
- Susan Marcoulier, AGPCNP-BCLeominster, MA 014531003215138
- Ashley Smith-Boutin, NP, R.N.Groton, MA 014501073922464
Common questions
What is Karen Lynn Riley, CRNP's NPI number?
Karen Lynn Riley, CRNP's National Provider Identifier (NPI) is 1073822797, issued on Sep 29, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Karen Lynn Riley, CRNP located?
The NPPES record lists a practice address at 554 Salisbury Street, Holden, MA, 01520. Phone: (443) 989-8718. Providers update this record themselves, so call before visiting.
How can I verify Karen Lynn Riley, CRNP's license?
NPPES lists Massachusetts license number 251009, as entered by the provider. Search the Massachusetts board that licenses this profession; the NPPES record confirms identity only.
How much does Karen Lynn Riley, CRNP prescribe under Medicare Part D?
In 2024, Karen Lynn Riley, CRNP had 138 Medicare Part D claims for 30 beneficiaries; the average among primary care nurse practitioner prescribers was 1,492. 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.