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DR. MICHAEL ROBERT O'BRIEN M.D.
NPI 1215257100
Internal Medicine in King Of Prussia, PA

Active since June 02, 2010PECOS EnrolledAccepts Medicare Assignment
170 N HENDERSON RD STE 310, KING OF PRUSSIA, PA 19406(610) 801-1805 Get Directions Write a Review

NPPES record last updated: June 12, 2024. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Jun 12, 2024, Nov 7, 2023 (2 updates tracked since 2023).

About Dr. Michael Robert O'brien M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. MICHAEL ROBERT O'BRIEN M.D. (NPI 1215257100) is an individual internal medicine provider in King Of Prussia, Pennsylvania, licensed in Pennsylvania (MD482644) and active in the NPI registry since June 2010. He is enrolled in Medicare PECOS, is affiliated with Main Line Hospital Lankenau, and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1215257100
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameDR. MICHAEL ROBERT O'BRIENCredential: M.D.
Location Address170 N HENDERSON RD STE 310King Of Prussia, PA 19406-2155
Mailing Address28 Saddlebrook LnPhoenixville, PA 19460-2393 · (631) 255-2601
Phone(610) 801-1805
Sole ProprietorNo
Medical School CMSOtherGraduated 2010
Enumeration DateJune 2, 2010
Last NPPES UpdateJune 12, 20242 updates tracked since enumeration
NPPES CertifiedJune 12, 2024
✔ NPI 1215257100 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in PA · MD482644
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
Also ListedPediatricsTaxonomy 208000000X · License 60273132 (NY)
170 N HENDERSON RD STE 310, King Of Prussia, PA 19406
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Secondary Practice Locations 2

Location 14808 Edgmont AveBrookhaven, PA 19015-1400 · Phone (610) 876-3072
Location 24 Jackson StBeacon, NY 12508-3453 · Phone (845) 883-8633

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Buckeye Health Plan, Ambetter Health, Ambetter Health of Delaware.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Michael Robert O'brien M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID8820387194
PECOS Enrollment IDI20240206000491
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

3

Medicare enrollment records show Michael O'brien reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Home Visit Medical PLLC
Same address
Internal Medicine
170 N HENDERSON RD STE 310
King Of Prussia, PA 19406
  • Reassigned Medicare billing, Pennsylvania enrollment
  • 2 clinicians in this Medicare group
NPI 1023812468 (610) 801-1805
Medexpress Urgent Care, PC - Pennsylvania
15 mi
Urgent Care
4808 EDGMONT AVE
Brookhaven, PA 19015
  • Reassigned Medicare billing, Pennsylvania enrollment
  • 214 clinicians in this Medicare group
NPI 1437681335 (610) 876-3072
West Coast Wound And Skin Care Inc
2,384 mi
Surgery
2309 W VICTORY BLVD
Burbank, CA 91506
  • Reassigned Medicare billing, Pennsylvania enrollment
  • 2 clinicians in this Medicare group
NPI 1437675980 (818) 856-9535

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Main Line Hospital Lankenau

Acute Care Hospitals · Wynnewood, PA
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number390195
Location100 Lancaster AveWynnewood, PA 19096 · Montgomery County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 19406 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$137.17 typical visit price
range $59.88 – $180.99
Typical copayment $34.29 (range $14.97 – $45.24)
Most-billed visit code 99204
Established Patient
$105.21 typical visit price
range $19.30 – $147.29
Typical copayment $26.30 (range $4.82 – $36.82)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

HOME VISIT MEDICAL PLLC
Internal Medicine
170 N HENDERSON RD STE 310
KING OF PRUSSIA, PA 19406
Montgomery County (610) 801-1805
WENDY KIM LE DPM, MPH
Podiatrist
170 N HENDERSON RD STE 310
KING OF PRUSSIA, PA 19406
Montgomery County (610) 672-8988
DR. ONIKEPE ADEGBOLA MD PHD
General Practice
170 N HENDERSON RD STE 310
KING OF PRUSSIA, PA 19406
Montgomery County (610) 486-5870
PREMIER ADVANCED PRACTICE GROUP, LLC
Clinic/Center (Primary Care)
170 N HENDERSON RD STE 310
KING OF PRUSSIA, PA 19406
Montgomery County (215) 760-6650
AMIT HARSH GANGOLI MD
Internal Medicine (Infectious Disease)
170 N HENDERSON RD STE 310
KING OF PRUSSIA, PA 19406
Montgomery County (610) 481-9600
KEYSTONE SPINE AND SPORT LLC
Chiropractor
170 N HENDERSON RD STE 310
KING OF PRUSSIA, PA 19406
Montgomery County (610) 466-5718
TIMOTHY LEGATH D.C.
Chiropractor
170 N HENDERSON RD STE 310
KING OF PRUSSIA, PA 19406
Montgomery County (610) 597-3936
STEPPING STONE FOOT & ANKLE SPECIALISTS LLC
Podiatrist (Foot & Ankle Surgery)
170 N HENDERSON RD STE 310
KING OF PRUSSIA, PA 19406
Montgomery County (267) 253-5792

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Michael O'brien's NPI number?

The NPI number for Michael O'brien is 1215257100. It was assigned to this individual provider in the NPPES registry on June 2, 2010.

Where is Michael O'brien located?

Michael O'brien practices at 170 N Henderson Rd Ste 310, King Of Prussia, PA 19406. The listed phone number is (610) 801-1805.

What is Michael O'brien's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Michael O'brien enrolled in Medicare?

Yes. Michael O'brien is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Michael O'brien's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Michael O'brien reassigns Medicare benefits to 3 organizations: Home Visit Medical PLLC (King Of Prussia, PA), Medexpress Urgent Care, PC - Pennsylvania (Brookhaven, PA) and West Coast Wound And Skin Care Inc (Burbank, CA). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Michael O'brien's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Michael O'brien accept?

Health plans from Ambetter Health, Ambetter Health of Delaware and Ambetter from Buckeye Health Plan list Michael O'brien as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Michael O'brien affiliated with any hospitals?

According to CMS data, Michael O'brien is affiliated with Main Line Hospital Lankenau.

When was this NPI record last updated?

The NPPES record for Michael O'brien was last updated on June 12, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.