ROSA CRISTINA VELASQUEZ MAGUINA MD
NPI 1740982966
Internal Medicine in Greenwich, CT

Q: What is Rosa Velasquez Maguina's NPI number?

The NPI number for Rosa Velasquez Maguina is 1740982966. It was assigned to this individual provider in the NPPES registry on March 21, 2023.

Q: What is Rosa Velasquez Maguina's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Active since March 21, 2023PECOS EnrolledAccepts Medicare Assignment

500 W PUTNAM AVE STE 110, GREENWICH, CT 06830(203) 422-7250(203) 422-7251 Get Directions Write a Review

NPPES record last updated: May 26, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: May 26, 2026, Mar 21, 2023 (2 updates tracked since 2023).

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About Rosa Cristina Velasquez Maguina Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

ROSA CRISTINA VELASQUEZ MAGUINA MD (NPI 1740982966) is an individual internal medicine provider in Greenwich, Connecticut, licensed in Connecticut (84873) and active in the NPI registry since March 2023. She is enrolled in Medicare PECOS and is a graduate of Other (2018).

NPPES Registry Identity

NPI1740982966

Entity TypeIndividualFemale

Primary Taxonomy207R00000X

Provider Legal NameROSA CRISTINA VELASQUEZ MAGUINACredential: MD

Location Address500 W PUTNAM AVE STE 110Greenwich, CT 06830-6079

Mailing Address500 W Putnam Ave Ste 110Greenwich, CT 06830-6079 · (203) 422-7250 · Fax (203) 422-7251

Phone(203) 422-7250

Fax(203) 422-7251

Sole ProprietorNo

Medical School CMSOtherGraduated 2018

Enumeration DateMarch 21, 2023

Last NPPES UpdateMay 26, 20262 updates tracked since enumeration

NPPES CertifiedMay 26, 2026

✔ NPI 1740982966 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

License✔ Licensed in CT · 84873

Definition

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

500 W PUTNAM AVE STE 110, Greenwich, CT 06830

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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Rosa Cristina Velasquez Maguina Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID6709344344

PECOS Enrollment IDI20260814001013

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Rosa Velasquez Maguina reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Mill Hill Medical Consultants Inc

0.4 mi

Cardiovascular Disease

55 HOLLY HILL LN, SUITE 240
Greenwich, CT 06830

Reassigned Medicare billing, Connecticut enrollment
Medicare enrollment name: Northeast Medical Group Inc
1,824 clinicians in this Medicare group

NPI 1396755245 (203) 863-4210

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 06830 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$138.84 typical visit price

range $60.82 – $183.10

Typical copayment $34.71 (range $15.20 – $45.77)

Most-billed visit code 99204

Established Patient

$106.68 typical visit price

range $19.76 – $149.26

Typical copayment $26.67 (range $4.94 – $37.31)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 4

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

ZHILIN JIN

Family Medicine

500 W PUTNAM AVE STE 110
GREENWICH, CT 06830

Western Connecticut Planning Region (203) 422-7250

MATTHEW MICHAEL SCOTT DO

Family Medicine (Adult Medicine)

500 W PUTNAM AVE STE 110
GREENWICH, CT 06830

Western Connecticut Planning Region (203) 422-7250

ANNA TAVDY RESISI DO

Internal Medicine

500 W PUTNAM AVE STE 110
GREENWICH, CT 06830

Western Connecticut Planning Region (203) 422-7250

KELSIE EILEEN TRILLO MSN-APRN-FNP-BC

Nurse Practitioner (Family)

500 W PUTNAM AVE STE 110
GREENWICH, CT 06830

Western Connecticut Planning Region (203) 422-7250

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Rosa Velasquez Maguina's NPI number?

The NPI number for Rosa Velasquez Maguina is 1740982966. It was assigned to this individual provider in the NPPES registry on March 21, 2023.

Where is Rosa Velasquez Maguina located?

Rosa Velasquez Maguina practices at 500 W Putnam Ave Ste 110, Greenwich, CT 06830. The listed phone number is (203) 422-7250.

What is Rosa Velasquez Maguina's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Rosa Velasquez Maguina enrolled in Medicare?

Yes. Rosa Velasquez Maguina is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organization bills Medicare for Rosa Velasquez Maguina's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Rosa Velasquez Maguina reassigns Medicare benefits to Mill Hill Medical Consultants Inc (Greenwich, CT). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Rosa Velasquez Maguina's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Rosa Velasquez Maguina was last updated on May 26, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.