Katherine Nau Grieco, D.O.
Addiction Medicine (Family Medicine) Physician · Hartford, CT
Katherine Nau Grieco, D.O. is an addiction medicine (family medicine) physician with a practice address in Hartford, Connecticut, and NPI 1396940722, issued on Jun 16, 2007. Check the license (Connecticut 048852, as entered in NPPES) on the Connecticut Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Katherine Nau Grieco
- Credential
- D.O.
- Primary taxonomy
- Addiction Medicine (Family Medicine) Physician 207QA0401X
- License number
- 048852 CT
Self-reported in NPPES; status is on the state search - Practice location
- 200 Retreat Avenue, Hartford, CT 06106
- Phone
- (484) 529-7465
- Enumerated
- Jun 16, 2007
- Record last updated
- Sep 25, 2020 (not updated in 6 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20120110000838); accepts Medicare assignment
- Medical or professional school
- University Of New England, College Of Osteo Medicine, 2005
- Entity
- Type 1 · individual
4 nearest addiction medicine (family medicine) physician records → All 5 in Connecticut → Look up another NPI →
Also registered at 200 Retreat Avenue
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Luciano Abbatemarco, LCSWClinical Social Worker1891096764
- Adrienne Allen, PSYDClinical Psychologist1598209124
- Sarah Amenta, APRN-BCPsychiatric/Mental Health Nurse Practitioner1750526042
- David Archibald, LCSWClinical Social Worker1023316692
- Jessica Backer Wilde, LCSWClinical Social Worker1275649535
- Sanjay Banerjee, M.D.Psychiatry Physician1467523928
Verify Katherine Nau Grieco in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersConnecticut Medical Examining Board
Search for license 048852Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
43% fewer Medicare Part D claims than the average addiction medicine (family medicine) physician in 2024
376 Medicare Part D claims for 60 beneficiaries, against an average of 664 among the 581 providers of this specialty who prescribed in Part D. Brand-name drugs were 7% of claims.
Most prescribed
- Buprenorphine-Naloxone88 claims
- Naltrexone Hcl40 claims
- Trazodone Hcl31 claims
- Buprenorphine Hcl21 claims
- Clonidine Hcl19 claims
- Gabapentin15 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 practice group's MIPS final score for 2023 (Medicare payment program): 86.4 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. 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, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $129.24
1 payment: food and beverage; the largest payer was Gilead Sciences, Inc. The 305 providers of this specialty with any payment received $1,151.00 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.
One hospital affiliation
- Hartford HospitalHartford, CT · Acute Care Hospitals4 of 5 stars
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Addiction Medicine (Family Medicine) Physician providers in Connecticut
There are 5 addiction medicine (family medicine) physician records in Connecticut.
All 5 in Connecticut → Every provider in Hartford → Addiction Medicine (Family Medicine) Physician nationwide →
The 4 addiction medicine (family medicine) physician records with the nearest ZIP codes
- Ayaz Madraswalla, MDPutnam, CT 062601902899859
- Lakshmi Basu, M.D.New London, CT 063201043427115
- Leigh Rowan-Kelly, MD FASAMHaddam, CT 064381790987709
- Christina Kolade, D.O.Bridgeport, CT 066061275608879
Common questions
What is Katherine Nau Grieco, D.O.'s NPI number?
Katherine Nau Grieco, D.O.'s National Provider Identifier (NPI) is 1396940722, issued on Jun 16, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Katherine Nau Grieco, D.O. located?
The NPPES record lists a practice address at 200 Retreat Avenue, Hartford, CT, 06106. Phone: (484) 529-7465. Providers update this record themselves, so call before visiting.
How can I verify Katherine Nau Grieco, D.O.'s license?
NPPES lists Connecticut license number 048852, as entered by the provider. Search the Connecticut Medical Examining Board at https://www.elicense.ct.gov/Lookup/LicenseLookup.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Katherine Nau Grieco, D.O. prescribe under Medicare Part D?
In 2024, Katherine Nau Grieco, D.O. had 376 Medicare Part D claims for 60 beneficiaries; the average among addiction medicine (family medicine) physician prescribers was 664. Part D covers Medicare prescriptions only.
What is Katherine Nau Grieco, D.O.'s MIPS final score?
The 2023 MIPS final score is 86.4 of 100, reported for the practice group. 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.