DR. MARK CWERN MD
NPI 1780661769
Internal Medicine - Gastroenterology in Nyc, NY

NPI Status: Active since December 29, 2005

Contact Information

305 E 55TH ST
NYC, NY
ZIP 10022
Phone: (212) 751-9714
Fax: (212) 832-1821

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  • Individual
  • Male
  • Internal Medicine
  • Gastroenterology
  • PECOS Enrolled

About MARK CWERN

This page provides the complete NPI Profile along with additional information for Mark Cwern, an internist established in Nyc, New York with a medical specialization in Internal Medicine, focusing in gastroenterology . The healthcare provider is registered in the NPI registry with number 1780661769 assigned on December 2005. The practitioner's primary taxonomy code is 207RG0100X with license number 125031 (NY). The provider is registered as an individual and his NPI record was last updated 18 years ago.

NPI
1780661769
Provider Name
DR. MARK CWERN MD
Gender
Male
Entity Type
Individual
Location Address
305 E 55TH ST NYC, NY 10022
Location Phone
(212) 751-9714
Location Fax
(212) 832-1821
Mailing Address
305 E 55TH ST NYC, NY 10022
Mailing Phone
(212) 751-9714
Mailing Fax
(212) 832-1821
Is Sole Proprietor?
Yes
Enumeration Date
12-29-2005
Last Update Date
07-08-2007
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An internist like Mark Cwern is a physician who has completed an internal medicine residency and is board-certified or board-eligible in an internist specialty. Internists are trained to care for adults of all ages for many different medical conditions. An internist typically monitors chronic physical conditions, identifies acute diseases, provides family planning, provides counseling about wellness and disease prevention, etc.

Location Map

Specialty - Primary Taxonomy

The NPI enumerator requires providers to submit at least one taxonomy code. A taxonomy code is a unique 10-character code that describes the healthcare provider type, classification, and the area of specialization. There could be only one primary taxonomy code per NPI record. For individual NPIs the license data is associated to the taxonomy code.

Classification

Internal Medicine Gastroenterology

Taxonomy Code
207RG0100X
Type
Allopathic & Osteopathic Physicians
License No.
125031
License State
NY
Taxonomy Description
An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.

Insurance Plans Accepted

According to publicly available information the provider might be accepting the following health plans from these health insurance companies:

Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.

Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.

*Please verify directly with this provider to make sure your insurance plan is currently accepted.

Additional Identifiers

The NPI Enumerator encourages providers to submit additional identifiers with their NPI application although the submission of this information is optional. The additional identifier(s) section includes other numbers or codes currently or formerly used as an identifier for the provider by other public healthcare entities. The identifiers may include UPIN, NSC, OSCAR, DEA, Medicaid State or PIN identification numbers.

Identifier Type / Code Identifier State Identifier Issuer
A97132MEDICARE UPIN (02) 
03A931MEDICARE ID-TYPE UNSPECIFIED (04) 
00741662MEDICAID (05)NY 

Medicare Participation & PECOS Enrollment Status

Mark Cwern 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

  • 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

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 esophagus, stomach, and/or upper small bowel using a flexible endoscope

This procedure involves using a thin, flexible tube with a light and camera, known as an endoscope, to examine the esophagus, stomach, and upper part of the small intestine. Small tissue samples are taken for further examination to help diagnose various conditions.

This service was performed 36 times for 36 patients

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 47 times for 47 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 45 times for 45 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 47 times for 47 patients

Diagnostic exam of large bowel using a flexible endoscope

This procedure, known as a colonoscopy, involves using a flexible tube with a light and camera to examine the large intestine. It helps detect any abnormalities such as polyps or inflammation. It's a standard procedure to ensure gut health.

This service was performed 27 times for 27 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 22 times for 19 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 27 times for 27 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 32 times for 31 patients

Physician Visit Costs

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 10022 ZIP code area.

New Patients Visit Costs *

The most utilized procedure code for new patients office visits is 99204

  • Average New Patient Price $150.24
  • Minimum New Patient Price $65.69
  • Maximum New Patient Price $198.19
  • Average New Patient Copayment $37.56
  • Minimum New Patient Copayment $16.42
  • Maximum New Patient Copayment $49.54

Established Patients Visit Costs *

The most utilized procedure code for established patients office visits is 99214

  • Average Established Patient Price $114.88
  • Minimum Established Patient Price $21.2
  • Maximum Established Patient Price $160.66
  • Average Established Patient Copayment $28.72
  • Minimum Established Patient Copayment $5.3
  • Maximum Established Patient Copayment $40.16

* 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.

Reviews for DR. MARK CWERN MD

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NPI Validation Check Digit Calculation


The following table explains the step by step NPI number validation process using the ISO standard Luhn algorithm.

Start with the original NPI number, the last digit is the check digit and is not used in the calculation.
1780661769
Step 1: Double the value of the alternate digits, beginning with the rightmost digit.
271601262712
Step 2: Add all the doubled and unaffected individual digits from step 1 plus the constant number 24.
2 + 7 + 1 + 6 + 0 + 1 + 2 + 6 + 2 + 7 + 1 + 2 + 24 = 61
Step 3: Subtract the total obtained in step 2 from the next higher number ending in zero, the result is the check digit.
70 - 61 = 99

The NPI number 1780661769 is valid because the calculated check digit 9 using the Luhn validation algorithm matches the last digit of the original NPI number.

Other Providers at the Same Location


The following 17 providers are registered at the same or nearby location.

NPI Name / Type Taxonomy Address
1326041310DR. MICHAEL STUART KLEIN D.D.S.
Individual
Dentist (General Practice)305 E 55TH ST APT 101
NEW YORK, NY 10022
(212) 752-2222
1679540124DR. THEODORE MARK AARONSON DDS
Individual
Dentist (General Practice)305 E 55TH ST SUITE 204
NEW YORK, NY 10022
(212) 688-7722
1902849730DR. MARTIN G STEIN M.D.
Individual
Internal Medicine (Cardiovascular Disease)305 E 55TH ST SUITE 107
NEW YORK, NY 10022
(212) 249-2704
1245315142 JONATHAN M SIMON
Individual
Acupuncturist305 E 55TH ST STE 106
NEW YORK, NY 10022
(212) 224-0087
1134271075DR. FAINA CHACHKO MD
Individual
Psychiatry & Neurology (Psychiatry)305 E 55TH ST SUITE 203
NEW YORK, NY 10022
(212) 759-5550
1225241987DR. MARC BOCHNER D.C.
Individual
Chiropractor (Sports Physician)305 E 55TH ST SUITE 108
NEW YORK, NY 10022
(212) 688-5770
1649462748DR. GRACE E LEE DDS
Individual
Dentist (General Practice)305 E 55TH ST SUITE 109
NEW YORK, NY 10022
(212) 688-9528
1801081831HERSCHEL KOTKES MD PC
Organization
Pain Medicine (Interventional Pain Medicine)305 E 55TH ST SUITE 206
NEW YORK, NY 10022
(212) 319-1339
1710124441NYC POINTS ACUPUNCTURE PC
Organization
Acupuncturist305 E 55TH ST STE 106
NEW YORK, NY 10022
(212) 224-0087
1336466010DR. JACK MITCHELL D.D.S
Individual
Dentist (Pediatric Dentistry)305 E 55TH ST SUITE 201
NEW YORK, NY 10022
(212) 755-3355
1083929913NEVILLE W, CARMICAL MD PC
Organization
Otolaryngology305 E 55TH ST SUITE 105
NEW YORK, NY 10022
(212) 755-2575
1922388933NYC MEDICAL, P.C.
Organization
Anesthesiology305 E 55TH ST
NEW YORK, NY 10022
(347) 417-9081
1548509524CM MEDICAL PC
Organization
Anesthesiology305 E 55TH ST
NEW YORK, NY 10022
(347) 417-9080
1851634737ELIZABETH C MUSS MD PLLC
Organization
Internal Medicine (Cardiovascular Disease)305 E 55TH ST SUITE 107
NEW YORK, NY 10022
(212) 753-9280
1114465408DR BRYAN M WOLYNSKI OD PC
Organization
Optometrist305 E 55TH ST SUITE 105
NEW YORK, NY 10022
(212) 375-1001
1295896421DR. RANDA M GARRANA MD
Individual
Ophthalmology305 E 55TH ST APT 105
NEW YORK, NY 10022
(212) 725-7442
1033158977MARTIN G. STEIN M.D., P.C.
Organization
Internal Medicine (Cardiovascular Disease)305 E 55TH ST SUITE 107
NEW YORK, NY 10022
(212) 249-2704

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1780661769, enumerated in the NPI registry as an "individual" on December 29, 2005

The provider is located at 305 E 55th St Nyc, Ny 10022 and the phone number is (212) 751-9714

The provider's speciality is Internal Medicine with taxonomy code 207RG0100X with a focus in Gastroenterology

The provider might be accepting Accepts: Medicare and Medicaid. Please consult your insurance carrier or call the provider to make sure your health plan is currently accepted.

Yes, as of June 20, 2025 the provider is registered in PECOS and is eligible to order health care services or supplies for Medicare patients. If you are a beneficiary 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.

Medicare beneficiaries should expect a typical cost of $150.24 with an average copayment of $37.56 for new patient appointments. Established patients should expect a typical charge of $114.88 and an average copayment of 28.72. Please review your insurance plan or contact the provider directly to determine your specific costs.

The most common procedures or services performed by this practitioner are: Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope, Biopsy of large bowel using a flexible endoscope, Colorectal cancer screening; colonoscopy on individual at high risk, Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk, Diagnostic exam of large bowel using a flexible endoscope, Established patient office or other outpatient visit, 20-29 minutes, New patient office or other outpatient visit, 30-44 minutes and Removal of polyps or growths of large bowel using an endoscope with mechanical snare.

This NPI record was last updated on December 29, 2005. To officially update your NPI information contact the National Plan and Provider Enumeration System (NPPES) at 1-800-465-3203 (NPI Toll-Free) or by email at [email protected].
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