Kathryn L. McMullan, MD

Medicare activity in 2024

Official CMS public-use data for Kathryn L. McMullan, 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.

Most frequent services

1. Professional service for preparation and provision of 1 or more antigens (95165)2,150 services
2. Professional service for multiple injections of allergen (95117)884 services
3. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)395 services
4. Test to measure expiratory airflow and volume (94010)241 services
5. Professional service for single injection of allergen (95115)206 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 cholesterol70%
• Arthritis69%
• Asthma56%
• Ischemic heart disease33%
• Anxiety31%

Hospitals where Kathryn L. McMullan works

Medicare's Facility Affiliation Data lists Kathryn L. McMullan 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.

• Forrest General HospitalHattiesburg, MS · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 250078
• Merit Health WesleyHattiesburg, MS · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 250094

Practice locations

Addresses where Kathryn L. McMullan is enrolled with Medicare (CMS data updated October 2, 2026).

• 109 Millsaps Dr, Suite CHattiesburg, MS 39402 (601) 268‑5051

Group practices

Medicare enrollment lists Kathryn L. McMullan as a member of this group (CMS data updated October 2, 2026).

• Mississippi Asthma and Allergy Clinic PA14 clinicians in the group

Specialties

• Allergy/Immunologyprimary
• Internal Medicinealso

Find other Allergy/Immunology doctors in Mississippi →

Other allergist and immunologists in Hattiesburg

Clinicians with the same Medicare primary specialty in Hattiesburg, MS — not a recommendation.

• William B. Sullivan
• Blake R. Olmsted, MD
• Jennifer Olivier, MD

All allergist and immunologists in Hattiesburg →

Other clinicians in Mississippi Asthma and Allergy Clinic PA

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

• William B. Sullivan
• Todd N. Adkins, MD
• Chelle P. Wilhelm, MD
• Patricia H. Stewart, MD
• Joshua F. Phillips, MD
• Mark G. Murray, MD

Clinician information

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