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DR. MARK PHILIP DIAMOND MD
NPI 1912081019
Internal Medicine - Gastroenterology in Baltimore, MD

Active since October 25, 2006PECOS EnrolledAccepts Medicare Assignment
21.31/100
CMS Quality Rating
9105 FRANKLIN SQUARE DRIVE, SUITE 308, BALTIMORE, MD 21237(410) 574-5877(410) 574-5879 Get Directions Write a Review

NPPES record last updated: July 8, 2007. Verified against the NPPES registry weekly; last sync: August 30, 2026.

About Dr. Mark Philip Diamond Md NPPES

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

DR. MARK PHILIP DIAMOND MD (NPI 1912081019) is an individual gastroenterology provider in Baltimore, Maryland, licensed in Maryland (D0022200) and active in the NPI registry since October 2006. He is enrolled in Medicare PECOS, is affiliated with Medstar Franklin Square Medical Center, and is a graduate of Ohio State University College Of Medicine (1974).

NPPES Registry Identity

NPI1912081019
Entity TypeIndividualMale
Primary Taxonomy207RG0100X
Provider Legal NameDR. MARK PHILIP DIAMONDCredential: MD
Location Address9105 FRANKLIN SQUARE DRIVE, SUITE 308Baltimore, MD 21237
Mailing Address925 Drohomer PlaceBaltimore, MD 21210 · (410) 435-2933 · Fax (410) 574-5879
Phone(410) 574-5877
Fax(410) 574-5879
Sole ProprietorNo
Medical School CMSOhio State University College Of MedicineGraduated 1974
Enumeration DateOctober 25, 2006
Last NPPES UpdateJuly 8, 2007
✔ NPI 1912081019 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians
Taxonomy Code207RG0100X
License✔ Licensed in MD · D0022200
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.
9105 FRANKLIN SQUARE DRIVE, Baltimore, MD 21237
Open in Google Maps ↗

Other Identifiers 2

Medicare UPIND73762
Medicare ID-Type Unspecified2789

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. Mark Philip Diamond Md 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 ID3173671609
PECOS Enrollment IDI20101217000431
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 9

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.
275 services239 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.
128 services127 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.
81 services81 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.
75 services71 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.
46 services46 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.
20 services20 patients

Hospital Affiliations CMS Care Compare

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

Medstar Franklin Square Medical Center

Acute Care Hospitals · Rosedale, MD
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number210015
Location9000 Franklin Square DriveRosedale, MD 21237 · Baltimore County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 21237 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.

21.31/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Individually scored
Quality0
Improvement Activities0
Cost71.06

Referred Medical Equipment & Supplies CMS DME claims

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

Skin barrier, wipes or swabs, each A5120
DME-Orthotic Devices · category DF010N
2 suppliers12 claims325 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 2

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

JESSIKA ROSE RD, LDN
Dietitian, Registered
9105 FRANKLIN SQUARE DRIVE, SUITE 305/306
ROSEDALE, MD 21237
Baltimore County (443) 777-2516
VINCENT J MARTORANA DPM
Podiatrist
9105 FRANKLIN SQUARE DRIVE, SUITE 206
BALTIMORE, MD 21237
Baltimore County (410) 574-3900

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 Diamond's NPI number?

The NPI number for Mark Diamond is 1912081019. It was assigned to this individual provider in the NPPES registry on October 25, 2006.

Where is Mark Diamond located?

Mark Diamond practices at 9105 Franklin Square Drive Suite 308, Baltimore, MD 21237. The listed phone number is (410) 574-5877.

What is Mark Diamond's specialty?

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

Is Mark Diamond enrolled in Medicare?

Yes. Mark Diamond 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.

Is Mark Diamond affiliated with any hospitals?

According to CMS data, Mark Diamond is affiliated with Medstar Franklin Square Medical Center.

When was this NPI record last updated?

The NPPES record for Mark Diamond 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.