Bonnie L. Ashby, MD

Medicare activity in 2024

Official CMS public-use data for Bonnie L. Ashby, 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. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)846 services
2. Administration of influenza virus vaccine (G0008)73 services
3. Influenza vaccine split virus, preservative free (90662)70 services
4. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)48 services
5. Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)45 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 pressure72%
• Arthritis64%
• Osteoporosis40%
• Ischemic heart disease34%
• Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)26%

Hospitals where Bonnie L. Ashby works

Medicare's Facility Affiliation Data lists Bonnie L. Ashby 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.

• Bryn Mawr HospitalBryn Mawr, PA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 390139
• Hospital of University of PennsylvaniaPhiladelphia, PA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 390111
• Main Line Hospital LankenauWynnewood, PA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 390195
• Paoli HospitalPaoli, PA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 390153
• Riddle Memorial HospitalMedia, PA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 390222

Practice locations

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

• 201 2nd AveCollegeville, PA 19426 (610) 489‑7703
• 830 Old Lancaster RdBryn Mawr, PA 19010
• 933 E Haverford RdBryn Mawr, PA 19010
• 933 E Haverford Rd, Suite 150Bryn Mawr, PA 19010 (484) 337‑5314

Group practices

Medicare enrollment lists Bonnie L. Ashby as a member of these groups (CMS data updated October 2, 2026).

• Main Line Healthcare1,184 clinicians in the group
• Novacare Outpatient Rehabilitation East, Inc.503 clinicians in the group

Specialties

• Internal Medicineprimary
• Geriatric Medicinealso
• Infectious Diseasealso

Find other Internal Medicine doctors in Pennsylvania →

Other internal medicine doctors in Collegeville

Clinicians with the same Medicare primary specialty in Collegeville, PA — not a recommendation.

• Edward C. Cikowski, DO
• Abraham S. Dubb, MD
• William C. Ware, MD
• John R. Walsh, DO
• Nancy J. Rist, MD
• Marat Mitelman, MD
• Douglas B. Lieberman, MD
• Benjamin Ware, MD

All internal medicine doctors in Collegeville →

Other clinicians in Main Line Healthcare

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

• Tanya Reznick, MD
• Bradford D. Smith Jr., MD
• Helena Kurniawan, DO
• Thomas Kibelstis, MD
• Erin McNamara, PA
• Jilda A. Opczynski, PA

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