DR. MARK GREGORY LAZAREV M.D.
NPI 1104094739
Internal Medicine - Gastroenterology in Baltimore, MD

Q: What is Mark Lazarev's NPI number?

The NPI number for Mark Lazarev is 1104094739. It was assigned to this individual provider in the NPPES registry on February 17, 2008.

Q: What is Mark Lazarev's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

Q: When was this NPI record last updated?

The NPPES record for Mark Lazarev was last updated on February 11, 2013. NPI Profile syncs with the weekly NPPES data releases published by CMS.

Active since February 17, 2008PECOS Enrolled

74.39/100

CMS Quality Rating

600 N WOLFE ST, 1830 BLDG, RM 420, BALTIMORE, MD 21287(410) 614-6708 Get Directions Write a Review

NPPES record last updated: February 11, 2013. Verified against the NPPES registry weekly; last sync: July 26, 2026.

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About Dr. Mark Gregory Lazarev M.d. NPPES

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

DR. MARK GREGORY LAZAREV M.D. (NPI 1104094739) is an individual gastroenterology provider in Baltimore, Maryland, licensed in Maryland (D69337) and active in the NPI registry since February 2008. He is enrolled in Medicare PECOS, is affiliated with Johns Hopkins Hospital, The, and is a graduate of University Of Pittsburgh School Of Medicine (2002).

NPPES Registry Identity

NPI1104094739

Entity TypeIndividualMale

Primary Taxonomy207RG0100X

Provider Legal NameDR. MARK GREGORY LAZAREVCredential: M.D.

Location Address600 N WOLFE ST, 1830 BLDG, RM 420Baltimore, MD 21287-0006

Mailing AddressPo Box 64264Baltimore, MD 21264-4264

Phone(410) 614-6708

Sole ProprietorNo

Medical School CMSUniversity Of Pittsburgh School Of MedicineGraduated 2002

Enumeration DateFebruary 17, 2008

Last NPPES UpdateFebruary 11, 2013

✔ NPI 1104094739 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians

Taxonomy Code207RG0100X

Licenses✔ Licensed in MD · D69337✔ Licensed in PA · MT185907

Definition

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.

600 N WOLFE ST, Baltimore, MD 21287

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Other Identifiers 2

Medicare PIN163720ZAEMMD

Medicaid418086100MD

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Mark Gregory Lazarev M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID446396501

PECOS Enrollment IDI20091005000345

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 14

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.

Injection, vedolizumab, intravenous, 1 mg J3380

Vedolizumab is a medication given via injection. It's used to treat certain bowel conditions (such as Crohn's disease, ulcerative colitis) by reducing inflammation. It works by blocking a certain protein that causes this inflammation.

14,100 services18 patients

Injection, denosumab, 1 mg J0897

Denosumab is a medication given via injection to strengthen your bones. It works by slowing down the cells that break down bone, improving bone density and reducing the risk of fractures. It's often used for osteoporosis treatment.

2,040 services28 patients

Injection, zoledronic acid, 1 mg J3489

Zoledronic acid is a medication given via injection to strengthen bones. It's often used in patients with osteoporosis or certain types of cancer. The injection helps reduce the risk of fractures and other bone complications.

255 services51 patients

Administration of chemotherapy into vein, 1 hour or less 96413

Chemotherapy is a treatment that uses drugs to destroy cancer cells. When administered into a vein, it's often through an IV. This procedure usually lasts 1 hour or less. You may feel a slight pinch as the needle is inserted, but it's generally painless.

140 services54 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.

131 services105 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.

94 services69 patients

Infusion into a vein for therapy, prevention, or diagnosis, 1 hour or less 96365

This is a procedure where a medical professional inserts a small tube into your vein to deliver medication, nutrients, or fluids directly into your bloodstream. This can be for treatment, prevention, or diagnosis. The process typically takes less than an hour.

76 services69 patients

Administration of chemotherapy into vein, each additional hour 96415

Chemotherapy is a treatment method that uses drugs to destroy cancer cells. The drugs are administered into a vein, usually in the arm. Each additional hour of chemotherapy allows for more of the medication to enter your bloodstream to fight against the cancer cells.

64 services24 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.

62 services62 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.

34 services34 patients

Injection of drug or substance under skin or into muscle 96372

This procedure involves administering medication directly under the skin or into a muscle. A small needle is used to inject the drug, allowing it to be absorbed quickly into the bloodstream. It's a common method for delivering a variety of medications.

34 services28 patients

Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes 99231

Follow-up hospital inpatient care is a daily service where a healthcare professional checks on your health progress during your hospital stay. Each session typically lasts 15 minutes, involving updates on your condition and adjustments to your treatment plan, if necessary.

34 services28 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.

31 services31 patients

Initial hospital care with straightforward or low level of medical decision making, per day, if using time, at least 40 minutes 99221

Initial hospital inpatient care refers to the first day of your stay in the hospital. This service typically includes a 30-minute check-up with a healthcare professional. They'll assess your health, discuss your condition, and plan your treatment. It's part of ensuring you receive the best possible care.

20 services20 patients

Hospital Affiliations CMS Care Compare 2

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

Johns Hopkins Hospital, The

Acute Care Hospitals · Baltimore, MD

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number210009

Location600 North Wolfe StreetBaltimore, MD 21287 · Baltimore City County

Emergency services Birthing friendly

Johns Hopkins Bayview Medical Center

Acute Care Hospitals · Baltimore, MD

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number210029

Location4940 Eastern AvenueBaltimore, MD 21224 · Baltimore City County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 21287 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

$139.05 typical visit price

range $60.73 – $183.44

Typical copayment $34.76 (range $15.18 – $45.86)

Most-billed visit code 99204

Established Patient

$106.59 typical visit price

range $19.60 – $149.17

Typical copayment $26.64 (range $4.90 – $37.29)

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.

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.

74.39/100

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

Scored as part of a group practice

Quality

64.71

Promoting Interoperability

Improvement Activities

Cost

52.43

Referred Medical Equipment & Supplies CMS DME claims 4

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

Parenteral nutrition solution, not otherwise specified, 10 grams lipids B4185

Other-Enteral and Parenteral · category OB005N

1 supplier51 claims1,325 services$11.14 avg. paid by Medicare

Parenteral nutrition solution; compounded amino acid and carbohydrates with electrolytes, trace elements and vitamins, including preparation, any strength, 74 to 100 grams of protein - premix B4197

Other-Enteral and Parenteral · category OB005N

1 supplier51 claims238 services$280.73 avg. paid by Medicare

Parenteral nutrition supply kit; premix, per day B4220

Other-Enteral and Parenteral · category OB005N

1 supplier51 claims238 services$8.04 avg. paid by Medicare

Parenteral nutrition administration kit, per day B4224

Other-Enteral and Parenteral · category OB005N

1 supplier51 claims238 services$25.10 avg. paid by Medicare

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

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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.

PAMELA KIMZEY DONOHUE SCD, PA-C

Physician Assistant (Medical)

600 N WOLFE ST, NELSON 2-133
BALTIMORE, MD 21287

Baltimore City (410) 955-5232

MR. CHRISTOPHER DAVID SCHRIEBER M.S., PA-C

Physician Assistant

600 N WOLFE ST, MARBURG B-186
BALTIMORE, MD 21287

Baltimore City (410) 955-8708

DR. SABRINA CHRISTINE SOPHA M.D.

Pathology (Anatomic Pathology & Clinical Pathology)

600 N WOLFE ST
BALTIMORE, MD 21287

Baltimore City (410) 955-3580

SANDRA KING D.H.

Dental Hygienist

600 N WOLFE ST, BLALOCK 266
BALTIMORE, MD 21287

Baltimore City (410) 955-6662

THERESA J RUDDY C.P.N.P., CRNP

Nurse Practitioner (Acute Care)

600 N WOLFE ST
BALTIMORE, MD 21287

Baltimore City (410) 955-5260

DR. SUMAN PAUL M.B.B.S, PHD

Internal Medicine (Medical Oncology)

600 N WOLFE ST
BALTIMORE, MD 21287

Baltimore City (410) 955-5000

MS. SARAH CATHERINE COLLICA

Psychiatry & Neurology (Psychiatry)

600 N WOLFE ST
BALTIMORE, MD 21287

Baltimore City (443) 287-4701

JEFF S EHRESMAN

Student in an Organized Health Care Education/Training Program

600 N WOLFE ST
BALTIMORE, MD 21287

Baltimore City (410) 955-5000

KAITLYN MARIE FRAZIER MD

Otolaryngology

600 N WOLFE ST, JOHNS HOPKINS HOSPITAL, DEPT OF OTOLARYNGOLOGY
BALTIMORE, MD 21287

Baltimore City (410) 955-5000

CAROLINE FRANCES PLOTT MS

Student in an Organized Health Care Education/Training Program

600 N WOLFE ST
BALTIMORE, MD 21287

Baltimore City (410) 955-3080

BRIAN TRAN PHARMD

Pharmacist (Ambulatory Care)

600 N WOLFE ST, CARNEGIE BLDG ROOM 180
BALTIMORE, MD 21287

Baltimore City (678) 879-3126

EMAD MUHAMMED ALI IBRAHIM

Student in an Organized Health Care Education/Training Program

600 N WOLFE ST
BALTIMORE, MD 21287

Baltimore City (410) 955-5000

AARON DOBBINS

Student in an Organized Health Care Education/Training Program

600 N WOLFE ST
BALTIMORE, MD 21287

Baltimore City (410) 955-9790

ETHAN THIO

Student in an Organized Health Care Education/Training Program

600 N WOLFE ST
BALTIMORE, MD 21287

Baltimore City (410) 955-5000

ALEXANDRA JADE DAVIS

Student in an Organized Health Care Education/Training Program

600 N WOLFE ST
BALTIMORE, MD 21287

Baltimore City (410) 955-5000

ARIE CALEB VAN WIEREN

Student in an Organized Health Care Education/Training Program

600 N WOLFE ST
BALTIMORE, MD 21287

Baltimore City (410) 955-5000

MS. ANA C ZEGHIBE

Student in an Organized Health Care Education/Training Program

600 N WOLFE ST
BALTIMORE, MD 21287

Baltimore City (410) 955-5000

MURPHY KENNY

Student in an Organized Health Care Education/Training Program

600 N WOLFE ST
BALTIMORE, MD 21287

Baltimore City (410) 955-5000

DR. PRADEEP Y RAMULU MD

Ophthalmology

600 N WOLFE ST
BALTIMORE, MD 21287

Baltimore City (410) 955-6052

LEISHA EMENS

Internal Medicine (Medical Oncology)

600 N WOLFE ST, SUITE 4628
BALTIMORE, MD 21287

Baltimore City (410) 955-8964

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 Mark Lazarev's NPI number?

The NPI number for Mark Lazarev is 1104094739. It was assigned to this individual provider in the NPPES registry on February 17, 2008.

Where is Mark Lazarev located?

Mark Lazarev practices at 600 N Wolfe St 1830 Bldg, Rm 420, Baltimore, MD 21287. The listed phone number is (410) 614-6708.

What is Mark Lazarev's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

Is Mark Lazarev enrolled in Medicare?

Yes. Mark Lazarev is registered in the Medicare PECOS enrollment system.

Is Mark Lazarev affiliated with any hospitals?

According to CMS data, Mark Lazarev is affiliated with Johns Hopkins Hospital, The and Johns Hopkins Bayview Medical Center.

When was this NPI record last updated?

The NPPES record for Mark Lazarev was last updated on February 11, 2013. NPI Profile syncs with the weekly NPPES data releases published by CMS.