Medical emergency?Emergency? Call 911. Nearest emergency roomsNearest ERs

Internal Medicine

Carlos M. Flores, MD

Works at hospitals in Springfield, MA · Massachusetts

Summary

Dr. Carlos M. Flores, MD is an internal medicine doctor at 233 Carew St, Suite 101, Springfield, MA 01104. Phone: (413) 748-9212. Accepts Medicare assignment. In 2024, Carlos M. Flores had 75 Original Medicare patients and 92 services. NPI 1699881912. 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: Internal medicine doctor (Medicare lists Internal Medicine)
  • Address: 233 Carew St, Suite 101, Springfield, MA 01104 · Directions (2 more locations)
  • Phone: (413) 748‑9212
  • Medicare: Accepts Medicare assignment
  • Hospitals: Baystate Medical Center, Mercy Medical Center
  • Group practice: Baystate Medical Practices Inc (+1 more)
  • Medical school: graduated 1993 (33 years since medical school)
  • Gender (as listed): Male

From official Medicare data

This page shows what Medicare's official clinician data says about Carlos M. Flores, 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 Carlos M. Flores accept Medicare assignment?
Yes. Medicare's clinician data says Carlos M. Flores 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 Carlos M. Flores see?
In 2024, CMS data shows 75 Original Medicare patients and 92 services for Carlos M. Flores. This counts Original Medicare only and measures volume, not quality.
What is Carlos M. Flores's NPI number?
1699881912. 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 Carlos M. Flores, 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 patients75
Services billed to Medicare92
Different services or procedures10
Participating Medicare providerYes
Average age of these patients71

Most frequent services

  1. Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)46 services
  2. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)23 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 cholesterol72%
  • Diabetes49%
  • Chronic kidney disease47%
  • Arthritis44%
  • Depression43%

Hospitals where Carlos M. Flores works

Medicare's Facility Affiliation Data lists Carlos M. Flores 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 Carlos M. Flores is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Carlos M. Flores as a member of these groups (CMS data updated October 2, 2026).

  • Baystate Medical Practices Inc1,369 clinicians in the group
  • Mercy Inpatient Medical Associates Inc60 clinicians in the group

Specialties

Find other Internal Medicine doctors in Massachusetts →

Other internal medicine doctors in Springfield

Clinicians with the same Medicare primary specialty in Springfield, MA — not a recommendation.

All internal medicine doctors in Springfield →

Other clinicians in Baystate Medical Practices Inc

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

Clinician information

CredentialMD
Graduation year1993 (33 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1699881912
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