DR. NICHOLAS M KARR MD
NPI 1609365691
Internal Medicine in Springfield, MA

Q: What is Nicholas Karr's NPI number?

The NPI number for Nicholas Karr is 1609365691. It was assigned to this individual provider in the NPPES registry on May 4, 2018.

Q: What is Nicholas Karr'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 Nicholas Karr was last updated on August 10, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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 May 04, 2018PECOS EnrolledAccepts Medicare Assignment

759 CHESTNUT ST, SPRINGFIELD, MA 01107(413) 794-6297(413) 794-1767 Get Directions Write a Review

NPPES record last updated: August 10, 2022. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Aug 10, 2022, May 4, 2018 (2 updates tracked since 2018).

On this page

About Dr. Nicholas M Karr Md NPPES

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

DR. NICHOLAS M KARR MD (NPI 1609365691) is an individual internal medicine provider in Springfield, Massachusetts, licensed in Massachusetts (292432) and active in the NPI registry since May 2018. He is enrolled in Medicare PECOS, is affiliated with Mercy Medical Ctr, and is a graduate of Florida State University College Of Medicine (2018).

NPPES Registry Identity

NPI1609365691

Entity TypeIndividualMale

Primary Taxonomy207R00000X

Provider Legal NameDR. NICHOLAS M KARRCredential: MD

Location Address759 CHESTNUT STSpringfield, MA 01107-1619

Mailing Address280 Chestnut Street, 2nd FloorSpringfield, MA 01199-1001 · (413) 794-5700

Phone(413) 794-6297

Fax(413) 794-1767

Sole ProprietorNo

Medical School CMSFlorida State University College Of MedicineGraduated 2018

Enumeration DateMay 4, 2018

Last NPPES UpdateAugust 10, 20222 updates tracked since enumeration

NPPES CertifiedAugust 10, 2022

✔ NPI 1609365691 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

License✔ Licensed in MA · 292432

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.

Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X

759 CHESTNUT ST, Springfield, MA 01107

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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Taro Health.Insurance ›

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. Nicholas M Karr 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 ID648527804

PECOS Enrollment IDI20220609000910

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 Nicholas Karr reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Baystate Medical Practices, Inc

Same address

Emergency Medical Services

759 CHESTNUT ST
Springfield, MA 01199

Reassigned Medicare billing, Massachusetts enrollment
1,537 clinicians in this Medicare group

NPI 1548205909 (413) 794-5700

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 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.

263 services118 patients

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.

255 services118 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.

120 services118 patients

Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223

Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.

17 services17 patients

Hospital Affiliations CMS Care Compare 2

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

Mercy Medical Ctr

Acute Care Hospitals · Springfield, MA

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number220066

Location271 Carew StreetSpringfield, MA 01104 · Hampden County

Emergency services Birthing friendly

Baystate Medical Center

Acute Care Hospitals · Springfield, MA

1/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number220077

Location759 Chestnut StreetSpringfield, MA 01199 · Hampden 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

$134.47 typical visit price

range $58.86 – $177.36

Typical copayment $33.61 (range $14.71 – $44.34)

Most-billed visit code 99204

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.

MEHAK ALI MD

Internal Medicine