Marianne Jeanette Davies, APRN
Medical-Surgical Clinical Nurse Specialist · New Haven, CT
Marianne Jeanette Davies, APRN is a medical-surgical clinical nurse specialist with a practice address in New Haven, Connecticut, and NPI 1285619353, issued on Dec 13, 2005. Check the license (Connecticut 002166, as entered in NPPES) with the Connecticut board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Marianne Jeanette Davies
- Credential
- APRN
- Primary taxonomy
- Medical-Surgical Clinical Nurse Specialist 364SM0705X
- License number
- 002166 CT
Self-reported in NPPES; status is on the state search - Practice location
- 800 Howard Ave, New Haven, CT 06519
- Phone
- (203) 785-4191
- Enumerated
- Dec 13, 2005
- Record last updated
- Jun 26, 2008 (not updated in 18 years: call before relying on the address or phone)
- Fax
- (203) 737-2617
- Medicaid ID
- 004208311 CT
- Medicare enrollment
- Enrolled (PECOS I20101007001269); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
3 nearest medical-surgical clinical nurse specialist records → All 4 in Connecticut → Look up another NPI →
Also registered at 800 Howard Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Nita Ahuja, M.D.Surgery Physician1093779308
- Christina Allen, MDSports Medicine (Orthopaedic Surgery) Physician1841242351
Verify Marianne Jeanette Davies in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Connecticut board licenses this profession
Search for license 002166Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
73% fewer Medicare Part D claims than the average medical-surgical clinical nurse specialist in 2024
138 Medicare Part D claims for 39 beneficiaries, against an average of 518 among the 35 providers of this specialty who prescribed in Part D. Brand-name drugs were 33% of claims.
Most prescribed
- Tagrisso21 claims
- Eliquis12 claims
- Levothyroxine Sodium12 claims
- Mirtazapine12 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): 73.6 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: $1,100.72
2 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 58 providers of this specialty with any payment received $594.72 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
- Yale UniversityNew Haven, CT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Medical-Surgical Clinical Nurse Specialist providers in Connecticut
There are 4 medical-surgical clinical nurse specialist records in Connecticut.
All 4 in Connecticut → Every provider in New Haven → Medical-Surgical Clinical Nurse Specialist nationwide →
The 3 medical-surgical clinical nurse specialist records with the nearest ZIP codes
- Joann Ahern, APRNDanbury, CT 068101770566317
- Lisa Corbett, APRNHartford, CT 061021689775694
- Shirley Leverton, APRNHartford, CT 061021710077441
Common questions
What is Marianne Jeanette Davies, APRN's NPI number?
Marianne Jeanette Davies, APRN's National Provider Identifier (NPI) is 1285619353, issued on Dec 13, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Marianne Jeanette Davies, APRN located?
The NPPES record lists a practice address at 800 Howard Ave, New Haven, CT, 06519. Phone: (203) 785-4191. Providers update this record themselves, so call before visiting.
How can I verify Marianne Jeanette Davies, APRN's license?
NPPES lists Connecticut license number 002166, as entered by the provider. Search the Connecticut board that licenses this profession; the NPPES record confirms identity only.
How much does Marianne Jeanette Davies, APRN prescribe under Medicare Part D?
In 2024, Marianne Jeanette Davies, APRN had 138 Medicare Part D claims for 39 beneficiaries; the average among medical-surgical clinical nurse specialist prescribers was 518. Part D covers Medicare prescriptions only.
What is Marianne Jeanette Davies, APRN's MIPS final score?
The 2023 MIPS final score is 73.6 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.