DR. KAREN A. CHOJNACKI M.D.
NPI 1083630685
Surgery in Philadelphia, PA

Q: What is Karen Chojnacki's NPI number?

The NPI number for Karen Chojnacki is 1083630685. It was assigned to this individual provider in the NPPES registry on July 15, 2006.

Q: What is Karen Chojnacki's specialty?

The primary specialty registered for this NPI is Surgery with taxonomy code 208600000X.

Q: When was this NPI record last updated?

The NPPES record for Karen Chojnacki was last updated on February 18, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.

Active since July 15, 2006PECOS EnrolledAccepts Medicare Assignment

1100 WALNUT ST, PHILADELPHIA, PA 19107(215) 955-6750(215) 923-8222 Get Directions Write a Review

NPPES record last updated: February 18, 2014. Verified against the NPPES registry weekly; last sync: August 09, 2026.

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About Dr. Karen A. Chojnacki M.d. NPPES

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

DR. KAREN A. CHOJNACKI M.D. (NPI 1083630685) is an individual surgery provider in Philadelphia, Pennsylvania, licensed in Pennsylvania (MD062646L) and active in the NPI registry since July 2006. She is enrolled in Medicare PECOS, is affiliated with Thomas Jefferson University Hospital, and is a graduate of State University Of New York At Buffalo School Of Medicine (1995).

NPPES Registry Identity

NPI1083630685

Entity TypeIndividualFemale

Primary Taxonomy208600000X

Provider Legal NameDR. KAREN A. CHOJNACKICredential: M.D.

Location Address1100 WALNUT STPhiladelphia, PA 19107-5563

Mailing Address615 Chestnut St, 14th FloorPhiladelphia, PA 19106-4404

Phone(215) 955-6750

Fax(215) 923-8222

Sole ProprietorNo

Medical School CMSState University Of New York At Buffalo School Of MedicineGraduated 1995

Enumeration DateJuly 15, 2006

Last NPPES UpdateFebruary 18, 2014

✔ NPI 1083630685 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySurgeryAllopathic & Osteopathic Physicians

Taxonomy Code208600000X

License✔ Licensed in PA · MD062646L

Definition

A general surgeon has expertise related to the diagnosis - preoperative, operative and postoperative management - and management of complications of surgical conditions in the following areas: alimentary tract; abdomen; breast, skin and soft tissue; endocrine system; head and neck surgery; pediatric surgery; surgical critical care; surgical oncology; trauma and burns; and vascular surgery. General surgeons increasingly provide care through the use of minimally invasive and endoscopic techniques. Many general surgeons also possess expertise in transplantation surgery, plastic surgery and cardiothoracic surgery.

1100 WALNUT ST, Philadelphia, PA 19107

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Other Identifiers 3

Medicare PIN048510PA

Medicaid001918279PA

Medicaid8954305NJ

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, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Karen A. Chojnacki 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 ID8921063819

PECOS Enrollment IDI20041119000501

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.

Areas of Expertise CMS Part B claims 13

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203

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.

48 services48 patients

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

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.

32 services29 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

30 services28 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232

Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.

28 services13 patients

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

27 services26 patients

New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203

26 services26 patients

Removal of gallbladder using an endoscope 47562

This procedure, known as endoscopic gallbladder removal, involves a surgeon using a special tool called an endoscope to remove your gallbladder through small incisions. It's typically done to treat gallstones and related complications. It's a less invasive method, often leading to quicker recovery.

25 services25 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

23 services22 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

22 services22 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

19 services19 patients

Repair of groin hernia (5 years or older) 49505

Repair of a groin hernia is a procedure aimed at fixing an abnormal bulge that can occur in the area between your abdomen and thigh. This condition happens when tissue pushes through a weak spot in your lower abdominal wall. The repair procedure returns this tissue back to its proper place.

14 services14 patients

Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222

Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.

13 services13 patients

Repair of hernia of muscle at esophagus and stomach with implantation of mesh using an endoscope 43282

This procedure fixes a hernia, a bulge or tear, in the muscle where the esophagus meets the stomach. Using an endoscope, a thin tube with a camera, a mesh is implanted to strengthen the area and prevent future hernias.

12 services12 patients

Hospital Affiliations CMS Care Compare

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

Thomas Jefferson University Hospital

Acute Care Hospitals · Philadelphia, PA

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number390174

Location111 South 11th StreetPhiladelphia, PA 19107 · Philadelphia County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 19107 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

$92.69 typical visit price

range $59.88 – $180.99

Typical copayment $23.17 (range $14.97 – $45.24)

Most-billed visit code 99203

Established Patient

$74.47 typical visit price

range $19.30 – $147.29

Typical copayment $18.61 (range $4.82 – $36.82)

Most-billed visit code 99213

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Referred Medical Equipment & Supplies CMS DME claims 3

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Ostomy skin barrier, powder, per oz A4371

DME-Orthotic Devices · category DF010N

1 supplier12 claims12 services$3.52 avg. paid by Medicare

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

DME-Orthotic Devices · category DF010N

2 suppliers12 claims119 services$2.50 avg. paid by Medicare

Skin barrier, wipes or swabs, each A5120

DME-Orthotic Devices · category DF010N

2 suppliers15 claims375 services$0.23 avg. paid by Medicare

Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

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.

DR. ANIRUDH KOHLI MD

Surgery

1100 WALNUT ST, SUITE 500
PHILADELPHIA, PA 19107

Philadelphia County (215) 955-6750

BRADLEY WAYNE FENTON MD

Internal Medicine

1100 WALNUT ST, SUITE #601
PHILADELPHIA, PA 19107

Philadelphia County (215) 955-9330

CATHERINE GILL-PRESTON ACNP, MSN, CRNP

Nurse Practitioner (Acute Care)

1100 WALNUT ST, MOB 7TH FLOOR
PHILADELPHIA, PA 19107

Philadelphia County (215) 955-4960

THEODORE TSANGARIS M.D.

Surgery

1100 WALNUT ST
PHILADELPHIA, PA 19107

Philadelphia County (215) 955-6999

DR. JOHN C. KAIRYS M.D.

Surgery

1100 WALNUT ST, SUITE 500
PHILADELPHIA, PA 19107

Philadelphia County (215) 955-5528

DR. HOOMAN NOORCHASHM MD

Surgery

1100 WALNUT ST, MOB, 5TH FLOOR, SUITE 500
PHILADELPHIA, PA 19107

Philadelphia County (215) 955-6750

DR. DAVID CHOOHYUN PAIK M.D.

Surgery (Surgical Critical Care)

1100 WALNUT ST, SUITE 500
PHILADELPHIA, PA 19107

Philadelphia County (215) 955-6750

DR. ALEC C BEEKLEY M.D.

Surgery (Trauma Surgery)

1100 WALNUT ST, 5TH FLOOR
PHILADELPHIA, PA 19107

Philadelphia County (215) 955-6750

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 Karen Chojnacki's NPI number?

The NPI number for Karen Chojnacki is 1083630685. It was assigned to this individual provider in the NPPES registry on July 15, 2006.

Where is Karen Chojnacki located?

Karen Chojnacki practices at 1100 Walnut St, Philadelphia, PA 19107. The listed phone number is (215) 955-6750.

What is Karen Chojnacki's specialty?

The primary specialty registered for this NPI is Surgery with taxonomy code 208600000X.

Is Karen Chojnacki enrolled in Medicare?

Yes. Karen Chojnacki 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.

What insurance does Karen Chojnacki accept?

Health plans from Ambetter Health, Ambetter Health of Delaware and Ambetter from Buckeye Health Plan list Karen Chojnacki 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 Karen Chojnacki affiliated with any hospitals?

According to CMS data, Karen Chojnacki is affiliated with Thomas Jefferson University Hospital.

When was this NPI record last updated?

The NPPES record for Karen Chojnacki was last updated on February 18, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.