Catherine Ann Yu, DNP, FNP-BC
Family Nurse Practitioner · Portsmouth, NH
Catherine Ann Yu, DNP, FNP-BC is a family nurse practitioner with a practice address in Portsmouth, New Hampshire, and NPI 1669604112, issued on Aug 18, 2009. Check the license (New Hampshire 048111-23, as entered in NPPES) with the New Hampshire board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Catherine Ann Yu
- Credential
- DNP, FNP-BC
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License numbers
- 048111-23 NH
CNP131048 ME
RN241510 MA
Self-reported in NPPES; status is on the state search - Practice location
- 170 Commerce Way Ste 103, Portsmouth, NH 03801
- Phone
- (207) 343-1701
- Enumerated
- Aug 18, 2009
- Record last updated
- Jul 17, 2018 (not updated in 8 years: call before relying on the address or phone)
- Fax
- (855) 628-4699
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 1,377 in New Hampshire → Look up another NPI →
Also registered at 170 Commerce Way Ste 103
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Nora KirshFamily Nurse Practitioner1467932459
- Donna Mohan, ARNPNurse Practitioner1902902075
Verify Catherine Ann Yu in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich New Hampshire board licenses this profession
Search for license 048111-23Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
98% fewer Medicare Part D claims than the average family nurse practitioner in 2024
21 Medicare Part D claims, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of 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.
Catherine Ann Yu among 1,377 family nurse practitioner records in New Hampshire
Catherine Ann Yu, DNP, FNP-BC is one of 1,377 family nurse practitioner records with a practice address in New Hampshire. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 21% of them.
- NPI issued2009 · 21% of these records are older, 77% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileNo · 66% of these records are
- Record last updated2018 · 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 New Hampshire practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
39 family nurse practitioner records list a practice address in Portsmouth
They are 39 of the 1,860 NPPES records with a practice address in Portsmouth, and 1,377 family nurse practitioner records in New Hampshire.
All 1,377 in New Hampshire → Every provider in Portsmouth → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Karen Adams, APRN FNP-BC MSN CDENewington, NH 038011366680787
- Stephanie Ayan, APRNPortsmouth, NH 038011861738320
- Crystal Bonias, APRNPortsmouth, NH 038011548505902
- Andrea Breig, NPPortsmouth, NH 038011841602133
- Amy Coombs, ARNPNewington, NH 038011104914860
- Yohanna Garcia Hernandez, NPPortsmouth, NH 038011508267345
- Gene Harkless, ARNPPortsmouth, NH 038011669544201
- Pamela Larocque, NPPortsmouth, NH 038011427499698
Common questions
What is Catherine Ann Yu, DNP, FNP-BC's NPI number?
Catherine Ann Yu, DNP, FNP-BC's National Provider Identifier (NPI) is 1669604112, issued on Aug 18, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Catherine Ann Yu, DNP, FNP-BC located?
The NPPES record lists a practice address at 170 Commerce Way Ste 103, Portsmouth, NH, 03801. Phone: (207) 343-1701. Providers update this record themselves, so call before visiting.
How can I verify Catherine Ann Yu, DNP, FNP-BC's license?
NPPES lists New Hampshire license number 048111-23, as entered by the provider. Search the New Hampshire board that licenses this profession; the NPPES record confirms identity only.
How much does Catherine Ann Yu, DNP, FNP-BC prescribe under Medicare Part D?
In 2024, Catherine Ann Yu, DNP, FNP-BC had 21 Medicare Part D claims; 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.