JILL ALISON O'BRIEN M.D.
NPI 1881896629
Internal Medicine in Providence, RI

Q: What is Jill O'brien's NPI number?

The NPI number for Jill O'brien is 1881896629. It was assigned to this individual provider in the NPPES registry on June 4, 2007. The provider is also known as Jill Alison Tremblay MD.

Q: What is Jill O'brien's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for Jill O'brien was last updated on March 15, 2012. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 years 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.

Active since June 04, 2007PECOS Enrolled

164 SUMMIT AVE, PROVIDENCE, RI 02906(401) 793-2104(401) 793-4741 Get Directions Write a Review

NPPES record last updated: March 15, 2012. Verified against the NPPES registry weekly; last sync: October 25, 2026.

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About Jill Alison O'brien M.d. NPPES

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

JILL ALISON O'BRIEN M.D. (NPI 1881896629) is an individual internal medicine provider in Providence, Rhode Island, licensed in Rhode Island (MD13193) and active in the NPI registry since June 2007. She is enrolled in Medicare PECOS, is affiliated with Morton Hospital, and is a graduate of Georgetown University School Of Medicine (2007).

NPPES Registry Identity

NPI1881896629

Entity TypeIndividualFemale

Primary Taxonomy207R00000X

Provider Legal NameJILL ALISON O'BRIENCredential: M.D.

Location Address164 SUMMIT AVEProvidence, RI 02906-2853

Mailing Address164 Summit AvenueProvidence, RI 02906 · (401) 793-2104 · Fax (401) 793-4741

Phone(401) 793-2104

Fax(401) 793-4741

Sole ProprietorNo

Medical School CMSGeorgetown University School Of MedicineGraduated 2007

Enumeration DateJune 4, 2007

Last NPPES UpdateMarch 15, 2012

✔ NPI 1881896629 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

Licenses✔ Licensed in RI · MD13193✔ Licensed in RI · LP01180

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.

164 SUMMIT AVE, Providence, RI 02906

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Other Names 1

Former Name (1)Jill Alison Tremblay Md

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Jill Alison O'brien M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID2365575701

PECOS Enrollment IDI20260305002395

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 Reassignments

Medicare enrollment records show Jill O'brien reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Lifespan Physician Group Inc

0.4 mi

Urology

195 COLLYER ST STE 201
Providence, RI 02904

Reassigned Medicare billing, Rhode Island enrollment
1,372 clinicians in this Medicare group

NPI 1720949803 (401) 272-7799

Lifespan Physician Group Of Massachusetts Inc

16 mi

Family Medicine

2007 BAY ST
Taunton, MA 02780

Reassigned Medicare billing, Massachusetts enrollment
547 clinicians in this Medicare group

NPI 1235957713 (774) 409-2009

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

Areas of Expertise CMS Part B claims 4

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232

Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.

37 services21 patients

Hospital discharge day management, 30 minutes or less 99238

Hospital discharge day management of 30 minutes or less includes finalizing your treatment, discussing your progress, and planning after-care at home. It ensures you're ready to leave the hospital and continue recovery safely.

20 services20 patients

Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222

Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.

17 services17 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233

Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.

16 services11 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Morton Hospital

Acute Care Hospitals · Taunton, MA

1/5 CMS rating

OwnershipProprietary

CMS Certification Number220073

Location88 Washington StreetTaunton, MA 02780 · Bristol County

Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 02906 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

$134.17 typical visit price

range $58.57 – $177.03

Typical copayment $33.54 (range $14.64 – $44.25)

Most-billed visit code 99204

Established Patient

$103.10 typical visit price

range $18.92 – $144.38

Typical copayment $25.77 (range $4.73 – $36.09)

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 20

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

MRS. HALINA KUC-MAZGAJ

Nurse Practitioner (Family)

164 SUMMIT AVE, THE MIRIAM HOSPITAL
PROVIDENCE, RI 02906

Providence County (401) 793-3902

KARL HERMAN M.D.

Internal Medicine

164 SUMMIT AVE, FAIN BLDG.
PROVIDENCE, RI 02906

Providence County (401) 793-4489

MUHAMMAD BAIG M.D.

Internal Medicine (Cardiovascular Disease)

164 SUMMIT AVE, FAIN BLDG
PROVIDENCE, RI 02906

Providence County (401) 793-4489

MS. LEANNE LAPARLE LICSW

Social Worker (Clinical)