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General Surgery

Milagros Lopez Gerena, MD

Works at hospitals in Oakland, MD · Morgantown, WV · Maryland, West Virginia

Summary

Dr. Milagros Lopez Gerena, MD is a general surgeon at 251 N 4th St, Specialty Physicians of Garrett County, Oakland, MD 21550. Phone: (301) 533-4000. Accepts Medicare assignment. In 2024, Milagros Lopez Gerena had 218 Original Medicare patients and 475 services. NPI 1922460039. 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 Milagros Lopez Gerena, 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 Milagros Lopez Gerena accept Medicare assignment?
Yes. Medicare's clinician data says Milagros Lopez Gerena 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 Milagros Lopez Gerena see?
In 2024, CMS data shows 218 Original Medicare patients and 475 services for Milagros Lopez Gerena. This counts Original Medicare only and measures volume, not quality.
What is Milagros Lopez Gerena's NPI number?
1922460039. 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 Milagros Lopez Gerena, 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 patients218
Services billed to Medicare475
Different services or procedures66
Participating Medicare providerYes
Average age of these patients73

Most frequent services

  1. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)74 services
  2. New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)45 services
  3. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)36 services
  4. Biopsy of large bowel using a flexible endoscope (45380)33 services
  5. Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)27 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%
  • Arthritis55%
  • Diabetes44%
  • Anxiety37%
  • Chronic kidney disease32%

Hospitals where Milagros Lopez Gerena works

Medicare's Facility Affiliation Data lists Milagros Lopez Gerena 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 Milagros Lopez Gerena is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Milagros Lopez Gerena as a member of this group (CMS data updated October 2, 2026).

  • Specialty Physicians of Garrett County, LLC91 clinicians in the group

Specialties

Find other General Surgery doctors in Maryland →

Other general surgeons in Maryland

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

All general surgeons in Maryland →

Other clinicians in Specialty Physicians of Garrett County, LLC

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

Clinician information

CredentialMD
Graduation year2012 (14 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1922460039
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