DR. MARC HOWARD GERTNER M.D.
NPI 1144227612
Surgery in Owings Mills, MD

Q: What is Marc Gertner's NPI number?

The NPI number for Marc Gertner is 1144227612. It was assigned to this individual provider in the NPPES registry on June 30, 2005.

Q: What is Marc Gertner'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 Marc Gertner was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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 June 30, 2005PECOS Enrolled

76.58/100

CMS Quality Rating

23 CROSSROADS DR, SUITE #240, OWINGS MILLS, MD 21117(410) 581-0700(410) 581-0705 Get Directions Write a Review

NPPES record last updated: July 8, 2007. Verified against the NPPES registry weekly; last sync: October 18, 2026.

On this page

About Dr. Marc Howard Gertner M.d. NPPES

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

DR. MARC HOWARD GERTNER M.D. (NPI 1144227612) is an individual surgery provider in Owings Mills, Maryland, licensed in Maryland (D0024778) and active in the NPI registry since June 2005. He is enrolled in Medicare PECOS, is affiliated with Sinai Hospital Of Baltimore, and is a graduate of Ohio State University College Of Medicine (1973).

NPPES Registry Identity

NPI1144227612

Entity TypeIndividualMale

Primary Taxonomy208600000X

Provider Legal NameDR. MARC HOWARD GERTNERCredential: M.D.

Location Address23 CROSSROADS DR, SUITE #240Owings Mills, MD 21117-5420

Mailing Address23 Crossroads Dr, Suite #240Owings Mills, MD 21117-5420 · (410) 581-0700 · Fax (410) 581-0705

Phone(410) 581-0700

Fax(410) 581-0705

Sole ProprietorNo

Medical School CMSOhio State University College Of MedicineGraduated 1973

Enumeration DateJune 30, 2005

Last NPPES UpdateJuly 8, 2007

✔ NPI 1144227612 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySurgeryAllopathic & Osteopathic Physicians

Taxonomy Code208600000X

License✔ Licensed in MD · D0024778

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.

23 CROSSROADS DR, Owings Mills, MD 21117

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Other Identifiers 2

Medicare ID-Type UnspecifiedA201

Medicare UPIND70379

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Marc Howard Gertner M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID8325056823

PECOS Enrollment IDI20060324000354

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 Reassignment

Medicare enrollment records show Marc Gertner reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Sinai Hospital Of Baltimore Inc

Same address

Surgery

21 CROSSROADS DR STE 360
Owings Mills, MD 21117

Reassigned Medicare billing, Maryland enrollment
664 clinicians in this Medicare group

NPI 1891705430 (410) 601-5524

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

Areas of Expertise CMS Part B claims 26

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.

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.

1,033 services533 patients

Limited ultrasound scan of abdomen 76705

A limited ultrasound scan of the abdomen is a non-invasive imaging test. It uses sound waves to produce images of the abdominal organs such as the liver, gallbladder, spleen, pancreas, and kidneys. This helps to identify any abnormalities or issues.

309 services152 patients

Removal of external hemorrhoids by rubber banding 46221

Rubber band ligation is a procedure used to treat external hemorrhoids. A doctor places small rubber bands around the base of the hemorrhoids. This cuts off blood supply, causing them to shrink and fall off, typically within a week.

245 services107 patients

Removal of polyps or growths of large bowel using a flexible endoscope with electrical cautery 45384

This procedure involves using a flexible tube with a camera, called an endoscope, to view the large intestine. If any abnormal growths or polyps are found, they are removed with an electrically-heated instrument. This is a common way to prevent bowel issues.

191 services191 patients

Destruction of polyp or growth of large bowel using a flexible endoscope 45388

This procedure involves the removal of a polyp or growth in the large bowel. A flexible endoscope, a thin tube with a camera, is inserted through the rectum to visualize and remove the growth. This helps maintain bowel health and prevent complications.

191 services191 patients

Biopsy of large bowel using a flexible endoscope 45380

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.

171 services171 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.

164 services90 patients

Removal of polyps or growths of large bowel using an endoscope with mechanical snare 45385

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.

136 services136 patients

Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope 43239

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.

85 services85 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.

85 services13 patients

Removal of polyps or growths of esophagus, stomach, and/or upper small bowel using a flexible endoscope with electrical cautery 43250

This procedure involves using a flexible tube with a camera (endoscope) to view and remove abnormal growths (polyps) in the esophagus, stomach, or upper small intestine. Electrical cautery, a tool that uses heat, helps in safely removing these growths.

84 services84 patients

Limited ultrasound scan of 1 breast 76642

A limited ultrasound scan of one breast is a non-invasive imaging test. It uses sound waves to create pictures of the inside of your breast. It helps identify any unusual growths or changes. It's safe, quick, and typically painless.

59 services39 patients

New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205

This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.

51 services51 patients

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215

This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.

48 services47 patients

Ultrasound scan of chest 76604

An ultrasound scan of the chest is a non-invasive imaging procedure that uses sound waves to create pictures of the structures within your chest, such as your heart and lungs. It's a safe, painless method that helps doctors diagnose and monitor various conditions.

33 services26 patients

Creation of muscle graft to trunk 15734

The creation of a muscle graft to the trunk is a surgical procedure where healthy muscle tissue is moved from one part of the body to another. This helps to repair damaged areas, improve function, and enhance appearance. It's a common procedure in reconstructive surgery.

31 services15 patients

Application of chemical to stop tissue regrowth in wound 17250

This procedure involves applying a special chemical to a wound to prevent unwanted tissue from growing back. It aids in proper healing by ensuring only healthy tissue regrows. It's a common, safe practice in wound care.

30 services22 patients

Balloon dilation of esophagus, stomach, and/or upper small bowel using a flexible endoscope, less than 3.0 cm 43249

This procedure involves using a flexible tube with a camera, called an endoscope, to gently expand narrowed areas in your esophagus, stomach, or upper small bowel. A small balloon is inflated, making it easier for food and liquid to pass through. It's safe and effective.

27 services27 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.

27 services27 patients

Diagnostic exam of rectum and lower large bowel using an endoscope 45300

This procedure, known as a sigmoidoscopy, involves using a thin, flexible instrument called an endoscope to examine your lower large bowel and rectum. This helps in identifying any abnormalities or issues that could affect your digestive health.

26 services24 patients

Limited ultrasound scan of joint or other extremity structure except blood vessels 76882

A limited ultrasound scan of a joint or other extremity structure lacking blood vessels is a non-invasive procedure that uses sound waves to create images of the inside of your body. This helps in diagnosing and monitoring conditions related to your joints or other similar structures.

26 services21 patients

Repair of trapped groin hernia (5 years or older) 49507

A trapped groin hernia repair is a procedure to fix an issue where part of your intestine or fat pushes through a weak spot in your lower abdominal wall, causing discomfort. The surgery puts these back in place and strengthens the weak area to prevent recurrence.

22 services22 patients

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.

21 services21 patients

Injection of anesthetic agent and/or steroid into lower abdomen and groin nerve 64425

This procedure involves injecting a numbing agent and/or a steroid into the lower abdomen and groin nerve. This can help reduce discomfort and inflammation in these areas. It's a safe and commonly performed procedure.

17 services14 patients

Complicated or multiple drainage of skin abscess 10061

This procedure involves draining one or more skin abscesses, which are pockets of pus that form due to an infection. The process includes making a small cut on the abscess, removing the pus, and cleaning the area to promote healing and prevent further infection.

16 services16 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.

12 services12 patients

Hospital Affiliations CMS Care Compare 2

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

Sinai Hospital Of Baltimore

Acute Care Hospitals · Baltimore, MD

2/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number210012

Location2401 West Belvedere AvenueBaltimore, MD 21215 · Baltimore City County

Emergency services Birthing friendly

Northwest Hospital Center

Acute Care Hospitals · Randallstown, MD

2/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number210040

Location5401 Old Court RoadRandallstown, MD 21133 · Baltimore County

Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 21117 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

$94.08 typical visit price

range $60.73 – $183.44

Typical copayment $23.52 (range $15.18 – $45.86)

Most-billed visit code 99203

Established Patient

$75.47 typical visit price

range $19.60 – $149.17

Typical copayment $18.86 (range $4.90 – $37.29)

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.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

76.58/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Scored as part of a group practice

Quality

64.56

Promoting Interoperability

100

Improvement Activities

Cost

48.54

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. MARC ADAM HONIG M.D.

Ophthalmology

23 CROSSROADS DR, SUITE #310
OWINGS MILLS, MD 21117

Baltimore County (410) 581-1500

NOVLET MARVALYN FENWICK CRNA

Nurse Anesthetist, Certified Registered

23 CROSSROADS DR
OWINGS MILLS, MD 21117

Baltimore County (410) 356-0300

MS. LINDA K FULLER M.A., CCC-A

Audiologist

23 CROSSROADS DR, #400
OWINGS MILLS, MD 21117

Baltimore County (410) 356-2626

DR. MARGERY KATES MD

Obstetrics & Gynecology

23 CROSSROADS DR, SUITE 220
OWINGS MILLS, MD 21117

Baltimore County (410) 581-9200

MARK A MASHBURN M.D.

Otolaryngology

23 CROSSROADS DR, SUITE 400
OWINGS MILLS, MD 21117

Baltimore County (410) 356-2626

CHESAPEAKE EAR, NOSE & THROAT, P.A.

Otolaryngology

23 CROSSROADS DR, SUITE 400
OWINGS MILLS, MD 21117

Baltimore County (410) 356-2626

DR. LINDSAY S CREED AU.D., CCC-A, FAAA

Audiologist

23 CROSSROADS DR, SUITE 400
OWINGS MILLS, MD 21117

Baltimore County (410) 356-2626

ERIN ELIZABETH YOUNG AU.D.

Audiologist

23 CROSSROADS DR, SUITE 400
OWINGS MILLS, MD 21117

Baltimore County (410) 356-2626

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 Marc Gertner's NPI number?

The NPI number for Marc Gertner is 1144227612. It was assigned to this individual provider in the NPPES registry on June 30, 2005.

Where is Marc Gertner located?

Marc Gertner practices at 23 Crossroads Dr Suite #240, Owings Mills, MD 21117. The listed phone number is (410) 581-0700.

What is Marc Gertner's specialty?

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

Is Marc Gertner enrolled in Medicare?

Yes. Marc Gertner is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Marc Gertner's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Marc Gertner reassigns Medicare benefits to Sinai Hospital Of Baltimore Inc (Owings Mills, MD). The 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 Marc Gertner's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Marc Gertner affiliated with any hospitals?

According to CMS data, Marc Gertner is affiliated with Sinai Hospital Of Baltimore and Northwest Hospital Center.

When was this NPI record last updated?

The NPPES record for Marc Gertner was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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.