DR. ERIN J LEAHY M.D.
NPI 1235339607
Internal Medicine - Geriatric Medicine in Springfield, MA

Active since July 23, 2007PECOS EnrolledAccepts Medicare Assignment
759 CHESTNUT ST, S2668, SPRINGFIELD, MA 01107(413) 794-8121 Get Directions Write a Review

NPPES record last updated: June 8, 2021. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Jun 8, 2021, Sep 2, 2016, Mar 17, 2016 and 1 more (4 updates tracked since 2016).

About Dr. Erin J Leahy M.d. NPPES

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

DR. ERIN J LEAHY M.D. (NPI 1235339607) is an individual geriatric medicine provider in Springfield, Massachusetts, licensed in Wisconsin (52576) and active in the NPI registry since July 2007. She is enrolled in Medicare PECOS, is affiliated with Confluence Health Hospital, and is a graduate of Medical College Of Wisconsin (2007).

NPPES Registry Identity

NPI1235339607
Entity TypeIndividualFemale
Primary Taxonomy207RG0300X
Provider Legal NameDR. ERIN J LEAHYCredential: M.D.
Location Address759 CHESTNUT ST, S2668Springfield, MA 01107-1619
Mailing Address280 Chestnut Street, 2nd FlSpringfield, MA 01199-1001 · (413) 794-5700
Sole ProprietorNo
Medical School CMSMedical College Of WisconsinGraduated 2007
Enumeration DateJuly 23, 2007
Last NPPES UpdateJune 8, 20214 updates tracked since enumeration
NPPES CertifiedJune 8, 2021
✔ NPI 1235339607 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Geriatric MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207RG0300X
Licenses✔ Licensed in WI · 52576✔ Licensed in MA · 243564
Definition
An internist who has special knowledge of the aging process and special skills in the diagnostic, therapeutic, preventive and rehabilitative aspects of illness in the elderly. This specialist cares for geriatric patients in the patient's home, the office, long-term care settings such as nursing homes and the hospital.
759 CHESTNUT ST, Springfield, MA 01107

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

Dr. Erin J Leahy M.d. 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 ID6507051372
PECOS Enrollment IDI20210401001729
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

4

Medicare enrollment records show Erin Leahy reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Neurology
101 EISENHOWER PKWY STE 300, PMB 3146
Roseland, NJ 07068
  • Reassigned Medicare billing, Wisconsin enrollment
Neurology
191 UTTER AVE
Staten Island, NY 10314
  • Reassigned Medicare billing, Wisconsin enrollment
Neurology
3752 N SHEFFIELD AVE APT 3S
Chicago, IL 60613
  • Reassigned Medicare billing, Wisconsin enrollment
Neurology
12022 BLUE VALLEY PKWY STE 514
Overland Park, KS 66213
  • Reassigned Medicare billing, Wisconsin enrollment

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 6

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.

Prolonged office or other outpatient evaluation and management service(s) beyond the maximum required time of the primary procedure which has been selected using total time on the date of the primary service; each additional 15 minutes by the physician or G2212
This service refers to extended doctor visits where your healthcare provider spends additional time evaluating and managing your health beyond the primary procedure's required time. This includes each extra 15 minutes spent by the physician on the same day as the primary service.
177 services40 patients
Administration of psychological or neuropsychological test by technician, each additional 30 minutes 96139
This service involves a technician administering additional psychological or neuropsychological testing. Each session lasts for an extra 30 minutes. These tests assess cognitive abilities, such as memory, attention, and problem-solving skills, to aid in diagnosing or monitoring mental health conditions.
60 services22 patients
New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205
This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.
25 services25 patients
Administration of psychological or neuropsychological test by technician, first 30 minutes 96138
This procedure involves a trained technician administering a psychological or neuropsychological test. It's a process that assesses your mental function and behavior. The initial session will last 30 minutes. The aim is to understand your cognitive abilities better.
21 services21 patients
Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215
This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.
19 services19 patients
Telephone medical discussion with physician, 21-30 minutes 99443
This service involves a 21-30 minute phone conversation with a physician. It's a chance for you to discuss your health concerns, symptoms or treatment plans. It's similar to an in-person consultation, but conducted over the phone for your convenience and safety.
12 services12 patients

Hospital Affiliations CMS Care Compare

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

Confluence Health Hospital

Acute Care Hospitals · Wenatchee, WA
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number500016
Location1201 S Miller StreetWenatchee, WA 98807 · Chelan County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 01107 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
$177.36 typical visit price
range $58.86 – $177.36
Typical copayment $44.34 (range $14.71 – $44.34)
Most-billed visit code 99205
Established Patient
$103.48 typical visit price
range $19.11 – $144.84
Typical copayment $25.87 (range $4.77 – $36.21)
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.

Internal Medicine
759 CHESTNUT ST
SPRINGFIELD, MA 01107
Internal Medicine
759 CHESTNUT ST
SPRINGFIELD, MA 01107
Internal Medicine
759 CHESTNUT ST
SPRINGFIELD, MA 01107
Internal Medicine
759 CHESTNUT ST
SPRINGFIELD, MA 01107
Pediatrics (Pediatric Critical Care Medicine)
759 CHESTNUT ST
SPRINGFIELD, MA 01107
Internal Medicine
759 CHESTNUT ST
SPRINGFIELD, MA 01107
Internal Medicine
759 CHESTNUT ST
SPRINGFIELD, MA 01107
Emergency Medicine
759 CHESTNUT ST
SPRINGFIELD, MA 01107

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 Erin Leahy's NPI number?

The NPI number for Erin Leahy is 1235339607. It was assigned to this individual provider in the NPPES registry on July 23, 2007.

Where is Erin Leahy located?

Erin Leahy practices at 759 Chestnut St S2668, Springfield, MA 01107. The listed phone number is (413) 794-8121.

What is Erin Leahy's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Geriatric Medicine, with taxonomy code 207RG0300X.

Is Erin Leahy enrolled in Medicare?

Yes. Erin Leahy 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 organizations bill Medicare for Erin Leahy's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Erin Leahy reassigns Medicare benefits to 4 organizations: Carend Provider Group Of New Jersey PC (Roseland, NJ), Care Neurodegenerative Medical Of New York PC (Staten Island, NY), Carend Provider Group PA (Chicago, IL) and Carend Provider Group Of Kansas PA (Overland Park, KS). Each 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 Erin Leahy's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Erin Leahy affiliated with any hospitals?

According to CMS data, Erin Leahy is affiliated with Confluence Health Hospital.

When was this NPI record last updated?

The NPPES record for Erin Leahy was last updated on June 8, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.