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DR. CYNTHIA ANNE KORZELIUS M.D.
NPI 1932175379
Internal Medicine - Nephrology in Newton, MA

Active since February 26, 2006PECOS EnrolledAccepts Medicare Assignment
2014 WASHINGTON ST, NEWTON WELLESLEY HOSPITAL, HOSPITALIST SUITE, 2 NORTH, NEWTON, MA 02462(617) 243-6433(617) 243-5148 Get Directions Write a Review

NPPES record last updated: September 11, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Dr. Cynthia Anne Korzelius M.d. NPPES

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

DR. CYNTHIA ANNE KORZELIUS M.D. (NPI 1932175379) is an individual nephrology provider in Newton, Massachusetts, licensed in Massachusetts (156597) and active in the NPI registry since February 2006. She is enrolled in Medicare PECOS, is affiliated with Newton-wellesley Hospital, and is a graduate of Johns Hopkins University School Of Medicine (1996).

NPPES Registry Identity

NPI1932175379
Entity TypeIndividualFemale
Primary Taxonomy207RN0300X
Provider Legal NameDR. CYNTHIA ANNE KORZELIUSCredential: M.D.
Location Address2014 WASHINGTON ST, NEWTON WELLESLEY HOSPITAL, HOSPITALIST SUITE, 2 NORTHNewton, MA 02462-1607
Mailing Address2014 Washington St # 2nNewton, MA 02462-1607 · (617) 243-6433 · Fax (617) 243-5148
Phone(617) 243-6433
Fax(617) 243-5148
Sole ProprietorNo
Medical School CMSJohns Hopkins University School Of MedicineGraduated 1996
Enumeration DateFebruary 26, 2006
Last NPPES UpdateSeptember 11, 2025
✔ NPI 1932175379 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · NephrologyAllopathic & Osteopathic Physicians
Taxonomy Code207RN0300X
License✔ Licensed in MA · 156597
Definition
An internist who treats disorders of the kidney, high blood pressure, fluid and mineral balance and dialysis of body wastes when the kidneys do not function. This specialist consults with surgeons about kidney transplantation.
Also ListedInternal MedicineTaxonomy 207R00000X · License 156597 (MA)

Other Identifiers 7

OtherAA15334MA · Harvard Pilgrim
Medicaid3191214MA
Other3571773MA · Aetna
Other9414827MA · Signa
OtherJ19912MA · Blue Cross Medex
Other403159MA · Tufts Health Plan
Other3127888MA · Healthsource

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Cynthia Anne Korzelius 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 ID840271557
PECOS Enrollment IDI20040527001346
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.

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.
162 services65 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.
128 services62 patients
Hospital discharge day management, more than 30 minutes 99239
Hospital discharge day management over 30 minutes involves a detailed process to ensure a smooth transition from hospital to home. It includes final examinations, discussion of your hospital stay, post-discharge instructions, and coordinating follow-up care.
45 services45 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.
21 services21 patients

Hospital Affiliations CMS Care Compare

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

Newton-Wellesley Hospital

Acute Care Hospitals · Newton, MA
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number220101
Location2014 Washington StreetNewton, MA 02462 · Middlesex County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 02462 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
$144.11 typical visit price
range $63.72 – $189.86
Typical copayment $36.02 (range $15.93 – $47.46)
Most-billed visit code 99204
Established Patient
$111.18 typical visit price
range $21.07 – $155.29
Typical copayment $27.79 (range $5.26 – $38.82)
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.

DR. ANDREA L RUSSO M.D.
Radiology (Radiation Oncology)
2014 WASHINGTON ST
NEWTON, MA 02462
Middlesex County (617) 219-1200
MAUREEN LAVELLE LICSW
Social Worker (Clinical)
2014 WASHINGTON ST
NEWTON, MA 02462
Middlesex County (617) 243-6664
SHALYNN DOHERTY
Physician Assistant
2014 WASHINGTON ST
NEWTON, MA 02462
Middlesex County (617) 831-7100
MR. KEVIN YAN KOENDERS PA-C
Physician Assistant (Surgical)
2014 WASHINGTON ST, DEPARTMENT OF ORTHOPEDICS
NEWTON, MA 02462
Middlesex County (617) 219-1674
NATHAN DANIEL BUCKLEY PA-C
Physician Assistant (Surgical)
2014 WASHINGTON ST
NEWTON, MA 02462
Middlesex County (617) 243-6000
DR. RONALD KENNETH PYE M.D.
Pediatrics (Neonatal-Perinatal Medicine)
2014 WASHINGTON ST, SCN 6 NORTH
NEWTON, MA 02462
Middlesex County (617) 243-6296
DR. TODD EARL ABBOTT M.D.
Pathology (Anatomic Pathology & Clinical Pathology)
2014 WASHINGTON ST, NEWTON-WELLESLEY HOSPITAL
NEWTON, MA 02462
Middlesex County (434) 964-1637
DIANE MARIE POULIN RN,NP
Nurse Practitioner (Adult Health)
2014 WASHINGTON ST, NEWTON WELLESLEY HOSPITAL DEPT. OF ANESTHESIA
NEWTON, MA 02462
Middlesex County (617) 243-6298

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 Cynthia Korzelius's NPI number?

The NPI number for Cynthia Korzelius is 1932175379. It was assigned to this individual provider in the NPPES registry on February 26, 2006.

Where is Cynthia Korzelius located?

Cynthia Korzelius practices at 2014 Washington St Newton Wellesley Hospital, Hospitalist Suite, 2 North, Newton, MA 02462. The listed phone number is (617) 243-6433.

What is Cynthia Korzelius's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Nephrology, with taxonomy code 207RN0300X.

Is Cynthia Korzelius enrolled in Medicare?

Yes. Cynthia Korzelius 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.

Is Cynthia Korzelius affiliated with any hospitals?

According to CMS data, Cynthia Korzelius is affiliated with Newton-Wellesley Hospital.

When was this NPI record last updated?

The NPPES record for Cynthia Korzelius was last updated on September 11, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.