1. Home
  2. Directory
  3. Massachusetts
  4. Natick
  5. Internal Medicine
  6. NPI Profile

TIMOTHY J ERNST M.D.
NPI 1972542975
Internal Medicine - Medical Oncology in Natick, MA

Active since June 05, 2006PECOS Enrolled
67 UNION ST, SUITE 206, NATICK, MA 01760(508) 655-0065 Get Directions Write a Review

NPPES record last updated: June 13, 2012. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Timothy J Ernst M.d. NPPES

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

TIMOTHY J ERNST M.D. (NPI 1972542975) is an individual medical oncology provider in Natick, Massachusetts, licensed in Massachusetts (52630) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1972542975
Entity TypeIndividualMale
Primary Taxonomy207RX0202X
Provider Legal NameTIMOTHY J ERNSTCredential: M.D.
Location Address67 UNION ST, SUITE 206Natick, MA 01760-7700
Mailing Address67 Union St, Suite 206Natick, MA 01760-7700 · (508) 655-0065
Phone(508) 655-0065
Sole ProprietorNo
Enumeration DateJune 5, 2006
Last NPPES UpdateJune 13, 2012
✔ NPI 1972542975 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Medical OncologyAllopathic & Osteopathic Physicians
Taxonomy Code207RX0202X
License✔ Licensed in MA · 52630
Definition
An internist who specializes in the diagnosis and treatment of all types of cancer and other benign and malignant tumors. This specialist decides on and administers therapy for these malignancies as well as consults with surgeons and radiotherapists on other treatments for cancer.
67 UNION ST, Natick, MA 01760
Open in Google Maps ↗

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Timothy J Ernst M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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 8

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.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
233 services162 patients
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
93 services82 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.
85 services38 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.
76 services63 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.
61 services31 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.
24 services23 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 01760 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
$189.86 typical visit price
range $63.72 – $189.86
Typical copayment $47.46 (range $15.93 – $47.46)
Most-billed visit code 99205
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.

RADHA AGARWAL MD PC
Internal Medicine
67 UNION ST, SUITE # 409
NATICK, MA 01760
Middlesex County (508) 650-5008
METROWEST VASCULAR PC
Surgery (Vascular Surgery)
67 UNION ST
NATICK, MA 01760
Middlesex County (508) 655-8900
SYNERGY DME
Durable Medical Equipment & Medical Supplies
67 UNION ST, SUITE 106
NATICK, MA 01760
Middlesex County (508) 650-9999
JAY A. GOLDSTEIN
Specialist
67 UNION ST, SUITE 501
NATICK, MA 01760
Middlesex County (508) 655-0525
MS. CAROL A DAUGHERTY NP
Nurse Practitioner
67 UNION ST, SUITE 308
NATICK, MA 01760
Middlesex County (508) 655-4422
ALLYSON STRASSBERGER LICSW
Social Worker
67 UNION ST
NATICK, MA 01760
Middlesex County (508) 650-1000
DR. KATHALEEN A. PORTER M.D.
Surgery
67 UNION ST, SUITE 203B
NATICK, MA 01760
Middlesex County (508) 652-0758
MEAGAN CHRISTINE FARRAHER ATC
Specialist/Technologist (Athletic Trainer)
67 UNION ST
NATICK, MA 01760
Middlesex County (508) 650-7252

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 Timothy Ernst's NPI number?

The NPI number for Timothy Ernst is 1972542975. It was assigned to this individual provider in the NPPES registry on June 5, 2006.

Where is Timothy Ernst located?

Timothy Ernst practices at 67 Union St Suite 206, Natick, MA 01760. The listed phone number is (508) 655-0065.

What is Timothy Ernst's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Medical Oncology, with taxonomy code 207RX0202X.

Is Timothy Ernst enrolled in Medicare?

Yes. Timothy Ernst is registered in the Medicare PECOS enrollment system.

What insurance does Timothy Ernst accept?

Health plans from Anthem Blue Cross and Blue Shield list Timothy Ernst as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Timothy Ernst was last updated on June 13, 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.