Alyssa E. Gruen, APRN
Family Nurse Practitioner · West Haven, CT
Alyssa E. Gruen, APRN is a family nurse practitioner with a practice address in West Haven, Connecticut, and NPI 1851919567, issued on Jul 9, 2020. Check the license (Connecticut 8923, as entered in NPPES) with the Connecticut board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Alyssa E. Gruen
- Credential
- APRN
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License number
- 8923 CT
Self-reported in NPPES; status is on the state search - Practice location
- 755 Campbell Ave Ste 2, West Haven, CT 06516
- Phone
- (038) 892-2972
- Enumerated
- Jul 9, 2020
- Record last updated
- Jul 9, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (203) 889-2249
- Medicare enrollment
- Enrolled (PECOS I20210115000275); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 2,669 in Connecticut → Look up another NPI →
Also registered at 755 Campbell Ave Ste 2
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jennifer Dias, APRNFamily Nurse Practitioner1346750643
- Audrey Spiegel, CPNP-PCPediatric Nurse Practitioner1730810300
Verify Alyssa E. Gruen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Connecticut board licenses this profession
Search for license 8923Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
9% fewer Medicare Part D claims than the average family nurse practitioner in 2024
1,187 Medicare Part D claims for 272 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D. 13 claims were for opioids.
Most prescribed
- Levothyroxine Sodium86 claims
- Metformin Hcl70 claims
- Losartan Potassium69 claims
- Atorvastatin Calcium61 claims
- Rosuvastatin Calcium53 claims
- Amlodipine Besylate52 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.
The MIPS final score for 2023 (Medicare payment program): 93.3 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $34.88
2 payments; by number, the most common kind was food and beverage; the largest payer was Iti, Inc. (d/b/a Intra-Cellular Therapies, 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.
Bills Medicare through one group practice
- Northeast Medical Group IncHamden, CT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Alyssa E. Gruen among 2,669 family nurse practitioner records in Connecticut
Alyssa E. Gruen, APRN is one of 2,669 family nurse practitioner records with a practice address in Connecticut. 76% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2020, is newer than 59% of them.
- NPI issued2020 · 59% of these records are older, 35% newer
- In a Medicare fileYes · 76% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2020 · median 2018 among the 1,664 with a school on file
- Record last updated2020 · 43% 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 Connecticut practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
92 family nurse practitioner records list a practice address in West Haven
They are 92 of the 1,356 NPPES records with a practice address in West Haven, and 2,669 family nurse practitioner records in Connecticut.
All 2,669 in Connecticut → Every provider in West Haven → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Jeanne Arsenault, APRNWest Haven, CT 065161720030372
- Wendy Bellmore, APRNWest Haven, CT 065161710938600
- Judith Deshpande, APRN-BCWest Haven, CT 065161528008489
- Renee Donnarumma, MSN, APRNWest Haven, CT 065161831335462
- Faith Harrington, FNP-CWest Haven, CT 065161649234287
- Rose Iannino-Renz, APRNWest Haven, CT 065161720258817
- Yongmei Jin, APRNWest Haven, CT 065161598918773
- Neelam Narula, NPWest Haven, CT 065161134270002
Common questions
What is Alyssa E. Gruen, APRN's NPI number?
Alyssa E. Gruen, APRN's National Provider Identifier (NPI) is 1851919567, issued on Jul 9, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Alyssa E. Gruen, APRN located?
The NPPES record lists a practice address at 755 Campbell Ave Ste 2, West Haven, CT, 06516. Phone: (038) 892-2972. Providers update this record themselves, so call before visiting.
How can I verify Alyssa E. Gruen, APRN's license?
NPPES lists Connecticut license number 8923, as entered by the provider. Search the Connecticut board that licenses this profession; the NPPES record confirms identity only.
How much does Alyssa E. Gruen, APRN prescribe under Medicare Part D?
In 2024, Alyssa E. Gruen, APRN had 1,187 Medicare Part D claims for 272 beneficiaries; the average among family nurse practitioner prescribers was 1,305. Part D covers Medicare prescriptions only.
What is Alyssa E. Gruen, APRN's MIPS final score?
The 2023 MIPS final score is 93.3 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.