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Internal Medicine

Richard S. Mills, MD

Works at hospitals in Atlanta, GA · Austell, GA · Marietta, GA … · Georgia

Summary

Dr. Richard S. Mills, MD is an internal medicine doctor at 790 Church St NE, Suite 220, Marietta, GA 30060. Phone: (678) 753-9300. Accepts Medicare assignment. In 2024, Richard S. Mills had 228 Original Medicare patients and 2,464 services. NPI 1407848716. 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 Richard S. 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 Richard S. Mills accept Medicare assignment?
Yes. Medicare's clinician data says Richard S. 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 Richard S. Mills see?
In 2024, CMS data shows 228 Original Medicare patients and 2,464 services for Richard S. Mills. This counts Original Medicare only and measures volume, not quality.
What is Richard S. Mills's NPI number?
1407848716. 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 Richard S. 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 patients228
Services billed to Medicare2,464
Different services or procedures39
Participating Medicare providerYes
Average age of these patients77

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)243 services
  2. Insertion of needle into vein for collection of blood sample (36415)215 services
  3. Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)165 services
  4. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)139 services
  5. Injection, dexamethasone sodium phosphate, 1 mg (J1100)96 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%
  • High blood pressure68%
  • Arthritis62%
  • Ischemic heart disease31%
  • Diabetes22%
  • Anxiety18%

Hospitals where Richard S. Mills works

Medicare's Facility Affiliation Data lists Richard S. 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 Richard S. Mills is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

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

  • Proactive Physicians of Marietta, PC2 clinicians in the group

Specialties

Find other Internal Medicine doctors in Georgia →

Other internal medicine doctors in Marietta

Clinicians with the same Medicare primary specialty in Marietta, GA — not a recommendation.

All internal medicine doctors in Marietta →

Other clinicians in Proactive Physicians of Marietta, PC

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

Clinician information

CredentialMD
Medical schoolEmory University School Of Medicine
Graduation year1992 (34 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1407848716
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