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Obstetrics/Gynecology

Caroline R. Cassling, MD

Sees patients in Portland, ME · Maine

Summary

Dr. Caroline R. Cassling, MD is an OB-GYN at 84 Marginal Way, Portland, ME 04101. Phone: (207) 774-5816. Accepts Medicare assignment. In 2024, Caroline R. Cassling had 45 Original Medicare patients and 97 services. NPI 1760860787. Source: CMS National Downloadable File, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

  • Specialty: OB-GYN (Medicare lists Obstetrics/Gynecology)
  • Address: 84 Marginal Way, Portland, ME 04101 · Directions
  • Phone: (207) 774‑5816
  • Medicare: Accepts Medicare assignment
  • Group practice: Intermed PA
  • Medical school: George Washington University School Of Medicine · graduated 2015 (11 years since medical school)
  • Gender (as listed): Female

From official Medicare data

This page shows what Medicare's official clinician data says about Caroline R. Cassling, 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 Caroline R. Cassling accept Medicare assignment?
Yes. Medicare's clinician data says Caroline R. Cassling 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 Caroline R. Cassling see?
In 2024, CMS data shows 45 Original Medicare patients and 97 services for Caroline R. Cassling. This counts Original Medicare only and measures volume, not quality.
What is Caroline R. Cassling's NPI number?
1760860787. 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 Caroline R. Cassling, 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 patients45
Services billed to Medicare97
Different services or procedures24
Participating Medicare providerYes
Average age of these patients74

Most frequent services

  1. Screening 3d breast mammography (77063)27 services
  2. Screening mammography (77067)27 services
  3. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)14 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 cholesterol75%
  • Arthritis47%
  • High blood pressure38%
  • Depression33%
  • Anxiety24%
  • Osteoporosis24%

Practice locations

Addresses where Caroline R. Cassling is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Caroline R. Cassling as a member of this group (CMS data updated October 2, 2026).

  • Intermed PA183 clinicians in the group

Specialties

Find other Obstetrics/Gynecology doctors in Maine →

Other OB-GYNs in Portland

Clinicians with the same Medicare primary specialty in Portland, ME — not a recommendation.

All OB-GYNs in Portland →

Other clinicians in Intermed PA

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

Clinician information

CredentialMD
Medical schoolGeorge Washington University School Of Medicine
Graduation year2015 (11 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1760860787
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. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  2. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  3. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  4. Medicare Care Compare — official Medicare tool to look up clinicians