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Gynecological Oncology

Jason A. Lachance, MD

Works at hospitals in Damariscotta, ME · Portland, ME · Brunswick, ME … · Maine, New Hampshire

Summary

Dr. Jason A. Lachance, MD is a gynecologic oncologist at 22 Bramhall St, Portland, ME 04102. Phone: (207) 662-2179. Accepts Medicare assignment. In 2024, Jason A. Lachance had 80 Original Medicare patients and 208 services. NPI 1518189349. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

From official Medicare data

This page shows what Medicare's official clinician data says about Jason A. Lachance, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Jason A. Lachance accept Medicare assignment?
Yes. Medicare's clinician data says Jason A. Lachance accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
How many Medicare patients does Jason A. Lachance see?
In 2024, CMS data shows 80 Original Medicare patients and 208 services for Jason A. Lachance. This counts Original Medicare only and measures volume, not quality.
What is Jason A. Lachance's NPI number?
1518189349. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Medicare activity in 2024

Official CMS public-use data for Jason A. Lachance, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Original Medicare patients80
Services billed to Medicare208
Different services or procedures29
Participating Medicare providerYes
Average age of these patients72

Most frequent services

  1. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)50 services
  2. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)47 services
  3. New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)21 services

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

  • High cholesterol68%
  • High blood pressure56%
  • Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)56%
  • Arthritis40%
  • Depression39%
  • Anxiety33%

Hospitals where Jason A. Lachance works

Medicare's Facility Affiliation Data lists Jason A. Lachance at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

  • LincolnhealthDamariscotta, ME · Critical Access Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 201302
  • MaineHealth Maine Medical CenterPortland, ME · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 200009
  • MaineHealth Mid Coast HospitalBrunswick, ME · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 200021
  • MaineHealth Pen Bay HospitalRockport, ME · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 200063
  • The Memorial HospitalNorth Conway, NH · Critical Access Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 301307

Practice locations

Addresses where Jason A. Lachance is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Jason A. Lachance as a member of this group (CMS data updated October 2, 2026).

  • MaineHealth2,633 clinicians in the group

Specialties

Find other Gynecological Oncology doctors in Maine →

Other gynecologic oncologists in Maine

Clinicians with the same Medicare primary specialty in Maine — not a recommendation.

All gynecologic oncologists in Maine →

Other clinicians in MaineHealth

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

CredentialMD
Medical schoolGeorgetown University School Of Medicine
Graduation year2001 (25 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1518189349
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
  2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
  3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  6. Medicare Care Compare — official Medicare tool to look up clinicians