DR. GERALD A. ISENBERG M.D.
NPI 1821018532
Colon & Rectal Surgery in Paoli, PA

Active since July 19, 2006PECOS EnrolledAccepts Medicare Assignment
255 W LANCASTER AVE STE 332, PAOLI, PA 19301(610) 647-3077(610) 993-0668 Get Directions Write a Review

NPPES record last updated: April 16, 2026. Verified against the NPPES registry weekly; last sync: July 19, 2026.

About Dr. Gerald A. Isenberg M.d. NPPES

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

DR. GERALD A. ISENBERG M.D. (NPI 1821018532) is an individual colon & rectal surgery provider in Paoli, Pennsylvania, licensed in Pennsylvania (MD037695E) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS, is affiliated with Thomas Jefferson University Hospital, and maintains a secondary practice location in Philadelphia.

NPPES Registry Identity

NPI1821018532
Entity TypeIndividualMale
Primary Taxonomy208C00000X
Provider Legal NameDR. GERALD A. ISENBERGCredential: M.D.
Location Address255 W LANCASTER AVE STE 332Paoli, PA 19301-1766
Mailing Address3803 W Chester Pike Ste 160Newtown Square, PA 19073-2336 · (610) 647-3077 · Fax (610) 993-0668
Fax(610) 993-0668
Sole ProprietorNo
Medical School CMSIcahn School Of Medicine At Mount SinaiGraduated 1982
Enumeration DateJuly 19, 2006
Last NPPES UpdateApril 16, 2026
NPPES CertifiedApril 16, 2026
NPI 1821018532 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

Primary SpecialtyColon & Rectal SurgeryAllopathic & Osteopathic Physicians
Taxonomy Code208C00000X
License Licensed in PA · MD037695E
Definition

A colon and rectal surgeon is trained to diagnose and treat various diseases of the intestinal tract, colon, rectum, anal canal and perianal area by medical and surgical means. This specialist also deals with other organs and tissues (such as the liver, urinary and female reproductive system) involved with primary intestinal disease.

Also ListedSurgeryTaxonomy 208600000X · License MD037695E (PA)
255 W LANCASTER AVE STE 332, Paoli, PA 19301

Secondary Practice Location 1

Location 11100 Walnut St, Suite 702Philadelphia, PA 19107-5563 · Phone (215) 955-5869 · Fax (215) 955-2404

Other Identifiers 2

Medicaid8667101NJ
Medicaid001430759PA

Accepted Insurance

Medicare Participation & PECOS Enrollment Status

Gerald Isenberg is registered with Medicare and accepts claims assignment, this means the provider accepts the approved amount for the cost of rendered services as full payment. Participating providers may not charge beneficiaries more than the approved amount for their services. Please keep in mind that beneficiaries still have to pay a coinsurance or copayment amount for a visit or service.

Gerald Isenberg is enrolled in PECOS and is eligible to order or refer health care services for Medicare patients. The provider is eligible to order or refer: Part B Clinical Laboratory and Imaging, Durable Medical Equipment (DME), a Home Health Agency (HHA) and Power Mobility Devices.

What is PECOS?
PECOS is the online Medicare enrollment management system or Provider, Enrollment, Chain and Ownership System. The PECOS system is a database of providers who have registered with CMS as providers or suppliers. PECOS is the primary source of information about verified Medicare professionals. Providers that want to participate in this program need to enroll in PECOS with their NPI number to avoid denied claims.

  • Is the provider registered in PECOS? Yes

  • PECOS PAC ID: 8628020815

    What is the PECOS Associate Control ID?
    A PAC ID is a unique 10-digit number assigned to an individual or organization healthcare provider in PECOS. The PAC ID is used to link together all the provider information, like tax identification numbers and organizational names. A PAC ID can be connected to multiple Enrollment IDs if an individual or organization has enrolled in PECOS more than once.

  • PECOS Enrollment ID: I20050216000256

    What is the Provider Enrollment ID?
    The Enrollment ID is a unique alphanumeric 15-digit code assigned to each new provider's PECOS enrollment application. The Enrollment ID is used to link together all the provider enrollment information like enrollment type, state, provider specialty, and reassignment of benefits.

  • Accepts Medicare Assignment? Yes

    What does it mean "accepts medicare assignment"?
    When a provider accepts Medicare assignment, the provider agrees to be paid directly by Medicare and to accept the payment amount approved by Medicare. Additionally, the provider agrees to not bill patients for more than the Medicare deductible and coinsurance amounts.
    A provider who doesn't accept assignment may charge you up to 15% over the Medicare-approved amount. This is known as the limiting charge. You may have to pay this amount, or it may be covered by another insurer.

  • Eligible to Order or Refer Part B Clinical Laboratory and Imaging: Yes

  • Eligible to Order or Refer Durable Medical Equipment (DMEPOS): Yes

  • Eligible to Order or Refer a Home Health Agency (HHA): Yes

  • Eligible to Order or Refer Power Mobility Devices: Yes

Provider Referred Orders for Durable Medical Equipment, Devices & Supplies

The following list reflects the services, supplies or durable medical equipment ordered by this provider to a DME supplier on behalf of patients. The information below is derived from Medicare claims data and reflects the BETOS category, HCPCS code information and the number times each service was submitted under the Medicare fee-for-service program.

Orthotic Devices

  • DME-Orthotic Devices (DF010N)

    Skin barrier; solid, 4 x 4 or equivalent; each (HCPCS:A4362)

    6 DME suppliers used 35 Medicare Claims 780 Services Paid

  • DME-Orthotic Devices (DF010N)

    Ostomy belt, each (HCPCS:A4367)

    3 DME suppliers used 12 Medicare Claims 16 Services Paid

  • DME-Orthotic Devices (DF010N)

    Ostomy skin barrier, liquid (spray, brush, etc.), per oz (HCPCS:A4369)

    2 DME suppliers used 15 Medicare Claims 38 Services Paid

  • DME-Orthotic Devices (DF010N)

    Ostomy skin barrier, solid 4 x 4 or equivalent, extended wear, without built-in convexity, each (HCPCS:A4385)

    6 DME suppliers used 25 Medicare Claims 540 Services Paid

  • DME-Orthotic Devices (DF010N)

    Ostomy pouch, drainable, with barrier attached, with built-in convexity (1 piece), each (HCPCS:A4389)

    2 DME suppliers used 11 Medicare Claims 146 Services Paid

  • DME-Orthotic Devices (DF010N)

    Ostomy deodorant, with or without lubricant, for use in ostomy pouch, per fluid ounce (HCPCS:A4394)

    5 DME suppliers used 37 Medicare Claims 486 Services Paid

  • DME-Orthotic Devices (DF010N)

    Ostomy skin barrier, pectin-based, paste, per ounce (HCPCS:A4406)

    4 DME suppliers used 16 Medicare Claims 85 Services Paid

  • DME-Orthotic Devices (DF010N)

    Ostomy skin barrier, with flange (solid, flexible, or accordion), extended wear, with built-in convexity, 4 x 4 inches or smaller, each (HCPCS:A4407)

    2 DME suppliers used 13 Medicare Claims 260 Services Paid

  • DME-Orthotic Devices (DF010N)

    Ostomy skin barrier, with flange (solid, flexible or accordion), without built-in convexity, 4 x 4 inches or smaller, each (HCPCS:A4414)

    3 DME suppliers used 19 Medicare Claims 400 Services Paid

  • DME-Orthotic Devices (DF010N)

    Ostomy pouch, drainable; for use on barrier with locking flange, with filter (2 piece system), each (HCPCS:A4427)

    3 DME suppliers used 26 Medicare Claims 640 Services Paid

  • DME-Orthotic Devices (DF010N)

    Skin barrier, wipes or swabs, each (HCPCS:A5120)

    6 DME suppliers used 28 Medicare Claims 1132 Services Paid

  • DME-Orthotic Devices (DF010N)

    Skin barrier; solid, 6 x 6 or equivalent, each (HCPCS:A5121)

    3 DME suppliers used 14 Medicare Claims 470 Services Paid

Durable Medical Equipment

  • DME-Medical/Surgical Supplies (DA000N)

    Adhesive remover or solvent (for tape, cement or other adhesive), per ounce (HCPCS:A4455)

    2 DME suppliers used 13 Medicare Claims 32 Services Paid

  • DME-Medical/Surgical Supplies (DA000N)

    Adhesive remover, wipes, any type, each (HCPCS:A4456)

    6 DME suppliers used 21 Medicare Claims 1191 Services Paid

Areas of Expertise

The following services and procedures, recently provided to Medicare patients, illustrate the range of care this provider offers. This list reflects the variety of services available to all patients visiting the practice and is based on 2022 Medicare dataset. In general, the more frequently a provider treats specific conditions or performs particular procedures, the more experienced they become in addressing similar patient needs. The provider has delivered many of the services listed below to Medicare patients. Please note that this list does not include services provided to patients who are not covered by Medicare.

Biopsy of large bowel using a flexible endoscope

A biopsy of the large bowel using a flexible endoscope is a procedure where a thin, flexible tube with a camera is inserted through the rectum to examine the bowel. If abnormal tissue is found, a small sample is taken for further examination. This helps in diagnosing conditions like inflammation, polyps, or cancer.

This service was performed 21 times for 21 patients

Colorectal cancer screening; colonoscopy on individual at high risk

Colorectal cancer screening, specifically a colonoscopy, is a preventive measure for those at high risk. A thin, flexible tube with a camera inspects the colon to spot any abnormal growths. This test helps detect potential issues early, enhancing the effectiveness of treatment.

This service was performed 60 times for 59 patients

Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk

Colorectal cancer screening, such as a colonoscopy, is a preventive measure to detect early signs of cancer in the large intestine. For individuals not at high risk, it's typically recommended at age 50. A small, flexible tube with a camera is used to examine your colon. It's a safe, effective way to catch issues early.

This service was performed 28 times for 28 patients

Diagnostic exam of anus using an endoscope

This procedure involves using a thin, flexible instrument called an endoscope to examine the anal area. It helps detect any abnormal conditions or issues. It's a safe, routine exam performed by a healthcare professional.

This service was performed 67 times for 64 patients

Established patient office or other outpatient visit, 10-19 minutes

This is a routine check-up for patients who have previously seen the doctor. During this 10-19 minute visit, the doctor will review your health status, discuss any concerns, and manage ongoing treatments or medications. It's a chance to ensure your health is on track.

This service was performed 71 times for 56 patients

Established patient office or other outpatient visit, 20-29 minutes

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

This service was performed 45 times for 40 patients

Injection of hemorrhoid

An injection for hemorrhoids involves administering a substance into the swollen tissue to reduce its size. It's a simple, quick procedure, performed in a doctor's office, to help alleviate discomfort and inflammation.

This service was performed 81 times for 44 patients

New patient office or other outpatient visit, 15-29 minutes

This service involves an initial visit to the doctor's office or other outpatient setting. It typically lasts between 15-29 minutes. The doctor will review your medical history, conduct a physical examination, and discuss your health concerns. It's a chance to establish your health baseline and address any immediate medical issues.

This service was performed 59 times for 59 patients

New patient office or other outpatient visit, 30-44 minutes

This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.

This service was performed 22 times for 22 patients

Removal of polyps or growths of large bowel using an endoscope with mechanical snare

This procedure involves using a thin, flexible tube called an endoscope to examine the large bowel. If any abnormal growths or polyps are found, a tool called a mechanical snare is used to remove them. This is a common method to prevent potential health issues.

This service was performed 40 times for 40 patients

Physician Visit Costs



The typical physician office visit costs for Medicare beneficiaries in this area are: $23.17 for a new patient copayment and $18.61 for an established patient copayment.

The pricing information below displays the copayment minimum, maximum and average amount that patients under Medicare are charged when visiting this provider as a new or established patient. Please keep in mind that these prices are just for reference purposes, and the actual prices charged by the provider might be different.

For patients covered under private health plans the prices below are also useful as healthcare pricing for private insurance is usually established as a function of Medicare prices. Private insurance covered patients should check their individual plans to determine the exact pricing.

The prices below reflect the costs for new and established patients in the 19301 ZIP code area.

New Patients Visit Costs *

The most utilized procedure code for new patients office visits is 99203

  • Average New Patient Price $92.69
  • Minimum New Patient Price $59.88
  • Maximum New Patient Price $180.99
  • Average New Patient Copayment $23.17
  • Minimum New Patient Copayment $14.97
  • Maximum New Patient Copayment $45.24

Established Patients Visit Costs *

The most utilized procedure code for established patients office visits is 99213

  • Average Established Patient Price $74.47
  • Minimum Established Patient Price $19.3
  • Maximum Established Patient Price $147.29
  • Average Established Patient Copayment $18.61
  • Minimum Established Patient Copayment $4.82
  • Maximum Established Patient Copayment $36.82

* The physician office visit costs information is generated by statistical analysis of similar providers in the same geographical area. The pricing information above IS NOT the amount charged by this provider.

Find Provider Hospital Affiliations - Privileges

Doctors and physicians must apply for hospital privileges to treat patients at hospitals. Find out if your doctor has privileges to practice at your preferred hospital by using the hospital affiliation information below based on recent medical claims.

Hospital affiliation is identified through self-reporting data, inpatient, outpatient, physician and ancillary service claims linked by the medical claims NPI number and place of service code. Additionally, to further determine provider hospital affiliation the clinician must have provided services to at least three patients on three different dates in the last 12 months. Gerald Isenberg is affiliated with the following medical facilities:

Hospital Name Address Phone Hospital Type Overall Rating
THOMAS JEFFERSON UNIVERSITY HOSPITAL111 SOUTH 11TH STREET
PHILADELPHIA, PA 19107
(215) 955-6000Acute Care Hospitals

Other Providers at the Same Location


The following 5 providers are registered at the same or a nearby location.

Surgery
255 W LANCASTER AVE STE 332
PAOLI, PA 19301
Surgery
255 W LANCASTER AVE STE 332
PAOLI, PA 19301
Surgery
255 W LANCASTER AVE STE 332
PAOLI, PA 19301
Surgery
255 W LANCASTER AVE STE 332
PAOLI, PA 19301
Surgery
255 W LANCASTER AVE STE 332
PAOLI, PA 19301

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1821018532, enumerated as an "individual" on July 19, 2006.

The provider is located at 255 W LANCASTER AVE STE 332 PAOLI, PA 19301 and the phone number is (610) 647-3077.

Colon & Rectal Surgery with taxonomy code 208C00000X.

The provider might be accepting Accepts: Ambetter from Buckeye Health Plan, Ambetter. Please consult your insurance carrier or call the provider to verify.

Gerald Isenberg is affiliated with: THOMAS JEFFERSON UNIVERSITY HOSPITAL.