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Gastroenterology

Lornette B. Mills, MD

Works at hospitals in Fort Washington, MD · Maryland

Summary

Dr. Lornette B. Mills, MD is a gastroenterologist at 3510 Old Washington Rd, Suite 201, Waldorf, MD 20602. Phone: (301) 645-8035. Accepts Medicare assignment. In 2024, Lornette B. Mills had 624 Original Medicare patients and 1,066 services. NPI 1689673741. 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.

  • Specialty: Gastroenterologist (Medicare lists Gastroenterology)
  • Address: 3510 Old Washington Rd, Suite 201, Waldorf, MD 20602 · Directions (1 more location)
  • Phone: (301) 645‑8035
  • Medicare: Accepts Medicare assignment
  • Hospital: Adventist Healthcare Fort Washington Medical Center
  • Group practice: Gastrointestinal Associates of Maryland PA
  • Medical school: State University Of New York At Buffalo School Of Medicine · graduated 1993 (33 years since medical school)
  • Gender (as listed): Female

From official Medicare data

This page shows what Medicare's official clinician data says about Lornette B. Mills, 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 Lornette B. Mills accept Medicare assignment?
Yes. Medicare's clinician data says Lornette B. Mills 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 Lornette B. Mills see?
In 2024, CMS data shows 624 Original Medicare patients and 1,066 services for Lornette B. Mills. This counts Original Medicare only and measures volume, not quality.
What is Lornette B. Mills's NPI number?
1689673741. 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 Lornette B. Mills, 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 patients624
Services billed to Medicare1,066
Different services or procedures22
Participating Medicare providerYes
Average age of these patients72

Most frequent services

  1. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)163 services
  2. New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)144 services
  3. Biopsy of large bowel using a flexible endoscope (45380)137 services
  4. Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)110 services
  5. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)110 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 blood pressure75%
  • High cholesterol75%
  • Arthritis52%
  • Diabetes42%
  • Chronic kidney disease23%
  • Ischemic heart disease19%

Hospitals where Lornette B. Mills works

Medicare's Facility Affiliation Data lists Lornette B. Mills 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.

Practice locations

Addresses where Lornette B. Mills is enrolled with Medicare (CMS data updated October 2, 2026).

  • 3510 Old Washington Rd, Suite 201Waldorf, MD 20602 (301) 645‑8035
  • 6710 Oxon Hill Rd, Suite 305Oxon Hill, MD 20745

Group practices

Medicare enrollment lists Lornette B. Mills as a member of this group (CMS data updated October 2, 2026).

  • Gastrointestinal Associates of Maryland PA8 clinicians in the group

Specialties

Find other Gastroenterology doctors in Maryland →

Other gastroenterologists in Waldorf

Clinicians with the same Medicare primary specialty in Waldorf, MD — not a recommendation.

All gastroenterologists in Waldorf →

Other clinicians in Gastrointestinal Associates of Maryland PA

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

Clinician information

CredentialMD
Medical schoolState University Of New York At Buffalo School Of Medicine
Graduation year1993 (33 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1689673741
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