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Internal Medicine

Dorothy E. Hairston, MD

Works at hospitals in La Mesa, CA · National City, CA · Brawley, CA … · California

Summary

Dr. Dorothy E. Hairston, MD is an internal medicine doctor at 2400 E 4th St, National City, CA 91950. Phone: (619) 470-4321. Accepts Medicare assignment. In 2024, Dorothy E. Hairston had 422 Original Medicare patients and 1,775 services. NPI 1114973633. 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 Dorothy E. Hairston, 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 Dorothy E. Hairston accept Medicare assignment?
Yes. Medicare's clinician data says Dorothy E. Hairston 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 Dorothy E. Hairston see?
In 2024, CMS data shows 422 Original Medicare patients and 1,775 services for Dorothy E. Hairston. This counts Original Medicare only and measures volume, not quality.
What is Dorothy E. Hairston's NPI number?
1114973633. 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 Dorothy E. Hairston, 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 patients422
Services billed to Medicare1,775
Different services or procedures28
Participating Medicare providerYes
Average age of these patients74

Most frequent services

  1. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)983 services
  2. Hospital discharge day management, more than 30 minutes (99239)292 services
  3. Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)221 services
  4. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)123 services
  5. Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)50 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%
  • Diabetes63%
  • Arthritis52%
  • Heart failure51%
  • Chronic kidney disease50%

Hospitals where Dorothy E. Hairston works

Medicare's Facility Affiliation Data lists Dorothy E. Hairston 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.

  • Grossmont HospitalLa Mesa, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050026
  • Paradise Valley HospitalNational City, CA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 050024
  • Pioneers Memorial Healthcare DistrictBrawley, CA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 050342
  • Sharp Chula Vista Medical CenterChula Vista, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050222

Practice locations

Addresses where Dorothy E. Hairston is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Dorothy E. Hairston as a member of these groups (CMS data updated October 2, 2026).

  • Paradise Valley Medical Group Inc9 clinicians in the group
  • Dorothy E Hairston M D A Professional Corporation2 clinicians in the group

Specialties

Find other Internal Medicine doctors in California →

Other internal medicine doctors in National City

Clinicians with the same Medicare primary specialty in National City, CA — not a recommendation.

All internal medicine doctors in National City →

Other clinicians in Paradise Valley Medical Group 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)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1114973633
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