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LISA MARIE GRONSKI D.O.
NPI 1265758577
Internal Medicine in Avon, CT

Active since April 12, 2010PECOS EnrolledAccepts Medicare Assignment
93.56/100
CMS Quality Rating
339 W MAIN ST, AVON, CT 06001(860) 696-2150(860) 696-2160 Get Directions Write a Review

NPPES record last updated: August 29, 2016. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Lisa Marie Gronski D.o. NPPES

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

LISA MARIE GRONSKI D.O. (NPI 1265758577) is an individual internal medicine provider in Avon, Connecticut, licensed in Connecticut (054041) and active in the NPI registry since April 2010. She is enrolled in Medicare PECOS and is a graduate of Other (2010).

NPPES Registry Identity

NPI1265758577
Entity TypeIndividualFemale
Primary Taxonomy207R00000X
Provider Legal NameLISA MARIE GRONSKICredential: D.O.
Location Address339 W MAIN STAvon, CT 06001-4322
Mailing Address339 W Main StAvon, CT 06001-4322 · (860) 696-2150 · Fax (860) 696-2160
Phone(860) 696-2150
Fax(860) 696-2160
Sole ProprietorNo
Medical School CMSOtherGraduated 2010
Enumeration DateApril 12, 2010
Last NPPES UpdateAugust 29, 2016
✔ NPI 1265758577 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in CT · 054041
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.
339 W MAIN ST, Avon, CT 06001
Open in Google Maps ↗

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

Lisa Marie Gronski D.o. 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 ID4183939655
PECOS Enrollment IDI20150812007907
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

2

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

Connecticut Osteopathic Center
1.9 mi
Sports Medicine
141 DOWD AVE
Canton, CT 06019
  • Reassigned Medicare billing, Connecticut enrollment
NPI 1649929126 (570) 498-4879
Hartford Healthcare Medical Group, Inc
14 mi
Surgery
1290 SILAS DEANE HWY, ATTN: LINDA STRAKA
Wethersfield, CT 06109
  • Reassigned Medicare billing, Connecticut enrollment
  • 747 clinicians in this Medicare group
NPI 1043561301 (860) 972-9033

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.

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
321 services43 patients
Osteopathic manipulative treatment, 7-8 body regions 98928
Osteopathic Manipulative Treatment (OMT) is a hands-on method where physicians use precise movements to diagnose, treat, and prevent illness or injury. In a 7-8 body regions OMT, the doctor focuses on multiple areas, such as the head, neck, back, or limbs, to enhance your body's natural healing process.
188 services29 patients
Osteopathic manipulative treatment, 5-6 body regions 98927
Osteopathic Manipulative Treatment (OMT) is a hands-on method where doctors use their hands to diagnose, treat, and prevent illness or injury. In a 5-6 body regions OMT, the doctor applies techniques on those areas to enhance your body's natural healing process.
139 services36 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.
77 services35 patients
Osteopathic manipulative treatment, 3-4 body regions 98926
Osteopathic Manipulative Treatment (OMT) is a hands-on method where a doctor uses specific techniques to diagnose, treat, and prevent illness or injury. For 3-4 body regions, the doctor focuses on areas like your head, neck, back, or limbs to improve function and promote healing.
51 services23 patients
Osteopathic manipulative treatment, 9-10 body regions 98929
Osteopathic Manipulative Treatment (OMT) involves hands-on care. In a 9-10 body regions procedure, a doctor manipulates muscles and joints using techniques like stretching, gentle pressure, and resistance to improve health and wellness. It's often used to ease pain, promote healing, and increase overall mobility.
35 services12 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 06001 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
$138.84 typical visit price
range $60.82 – $183.10
Typical copayment $34.71 (range $15.20 – $45.77)
Most-billed visit code 99204
Established Patient
$106.68 typical visit price
range $19.76 – $149.26
Typical copayment $26.67 (range $4.94 – $37.31)
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.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

93.56/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored through an Alternative Payment Model
Quality78.51
Promoting Interoperability100
Improvement Activities40

Other Providers at the Same Location NPPES 14

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

LAUREN VO APRN
Nurse Practitioner (Primary Care)
339 W MAIN ST
AVON, CT 06001
Capitol Planning Region (860) 696-2150
DR. SPENCER G ERMAN MD
Family Medicine
339 W MAIN ST, HARTFORD MEDICAL GROUP
AVON, CT 06001
Capitol Planning Region (860) 696-2150
DAVID W GARRY PA-C
Physician Assistant (Medical)
339 W MAIN ST
AVON, CT 06001
Capitol Planning Region (860) 696-2250
DR. MARCIN JAREMKO M.D.
Family Medicine
339 W MAIN ST
AVON, CT 06001
Capitol Planning Region (860) 696-2150
RENEE DELA CHEVROTIERE
Nurse Practitioner (Family)
339 W MAIN ST
AVON, CT 06001
Capitol Planning Region (860) 696-2150
ALEKSANDRA POKA
Physician Assistant
339 W MAIN ST
AVON, CT 06001
Capitol Planning Region (860) 696-2150
HARTFORD CLINICAL ASSOCIATES, PC
Durable Medical Equipment & Medical Supplies
339 W MAIN ST
AVON, CT 06001
Capitol Planning Region (860) 547-0616
SAMANTHA HELENE MCROY NP
Nurse Practitioner (Family)
339 W MAIN ST
AVON, CT 06001
Capitol Planning Region (860) 696-2150

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 Lisa Gronski's NPI number?

The NPI number for Lisa Gronski is 1265758577. It was assigned to this individual provider in the NPPES registry on April 12, 2010.

Where is Lisa Gronski located?

Lisa Gronski practices at 339 W Main St, Avon, CT 06001. The listed phone number is (860) 696-2150.

What is Lisa Gronski's specialty?

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

Is Lisa Gronski enrolled in Medicare?

Yes. Lisa Gronski 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 Lisa Gronski's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Lisa Gronski reassigns Medicare benefits to 2 organizations: Connecticut Osteopathic Center (Canton, CT) and Hartford Healthcare Medical Group, Inc (Wethersfield, CT). 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 Lisa Gronski's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Lisa Gronski was last updated on August 29, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.