DR. JAMES HARRELL MASTERSON M.D.
NPI 1639330889
Urology in Annapolis, MD

Q: What is James Masterson's NPI number?

The NPI number for James Masterson is 1639330889. It was assigned to this individual provider in the NPPES registry on June 20, 2008.

Q: What is James Masterson's specialty?

The primary specialty registered for this NPI is Urology with taxonomy code 208800000X.

Q: When was this NPI record last updated?

The NPPES record for James Masterson was last updated on March 12, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 months 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 20, 2008PECOS EnrolledAccepts Medicare Assignment

83.56/100

CMS Quality Rating

810 BESTGATE RD STE 235, ANNAPOLIS, MD 21401(443) 231-1500 Get Directions Write a Review

NPPES record last updated: March 12, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Mar 12, 2025, Jan 27, 2021, Jan 5, 2017 (3 updates tracked since 2017).

On this page

About Dr. James Harrell Masterson M.d. NPPES

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

DR. JAMES HARRELL MASTERSON M.D. (NPI 1639330889) is an individual urology provider in Annapolis, Maryland, licensed in Maryland (D0090586) and active in the NPI registry since June 2008. He is enrolled in Medicare PECOS, is affiliated with University Of Md Capital Region Medical Center, and maintains a secondary practice location in Bethesda.

NPPES Registry Identity

NPI1639330889

Entity TypeIndividualMale

Primary Taxonomy208800000X

Provider Legal NameDR. JAMES HARRELL MASTERSONCredential: M.D.

Location Address810 BESTGATE RD STE 235Annapolis, MD 21401-3656

Mailing Address10200 Grand Central Ave Ste 220Owings Mills, MD 21117-4366

Phone(443) 231-1500

Sole ProprietorYes

Medical School CMSUniformed Services Uhs Fe Hebert School Of MedGraduated 2008

Enumeration DateJune 20, 2008

Last NPPES UpdateMarch 12, 20253 updates tracked since enumeration

NPPES CertifiedMarch 12, 2025

✔ NPI 1639330889 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyUrologyAllopathic & Osteopathic Physicians

Taxonomy Code208800000X

Licenses✔ Licensed in MD · D0090586✔ Licensed in VA · 0101246002

Definition

A urologist manages benign and malignant medical and surgical disorders of the genitourinary system and the adrenal gland. This specialist has comprehensive knowledge of and skills in endoscopic, percutaneous and open surgery of congenital and acquired conditions of the urinary and reproductive systems and their contiguous structures.

Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X

810 BESTGATE RD STE 235, Annapolis, MD 21401

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Secondary Practice Location 1

Location 18901 Rockville PikeBethesda, MD 20889-0001 · Phone (301) 526-1350

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. James Harrell Masterson 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 ID7517254683

PECOS Enrollment IDI20170131002634, I20210201000354

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 Reassignments

Medicare enrollment records show James Masterson reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Chesapeake Urology Associates, LLC

Same address

Urology

810 BESTGATE RD STE 235
Annapolis, MD 21401

Reassigned Medicare billing, Maryland and District of Columbia enrollments
Also billed through NPI 1790500114 (District of Columbia)
166 clinicians in this Medicare group

NPI 1730904327 (443) 231-1500

University Of Florida Jacksonville Physicians Inc

663 mi

Pulmonary Disease

655 W 8TH ST, UFJP PULMONARY
Jacksonville, FL 32209

Reassigned Medicare billing, Florida enrollment
1,456 clinicians in this Medicare group

NPI 1104086479 (904) 244-3660

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 19

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.

350 services201 patients

Automated urinalysis test 81003

An automated urinalysis test is a routine examination that checks your urine for various substances. It can help identify potential health issues such as kidney problems or diabetes. The test uses a machine to analyze a small urine sample, providing quick and accurate results.

309 services211 patients

Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month 99490

Chronic care management services involve a healthcare professional directing clinical staff in managing your chronic conditions. This includes the first 20 minutes per month of services like medication management, care coordination, and health monitoring to help improve your health and quality of life.

205 services28 patients

Principal care management services for a single high-risk disease, first 30 minutes of clinical staff time directed by health care professional, per calendar month 99426

Principal care management services focus on managing a single high-risk disease. This involves a health care professional directing clinical staff for the first 30 minutes each month. The aim is to monitor your health, coordinate care, and provide necessary support for your disease management.

166 services22 patients

Insertion of needle into vein for collection of blood sample 36415

This procedure involves inserting a small needle into a vein, typically in your arm, to collect a blood sample. It's a quick and simple process to help diagnose or monitor health conditions. You may feel a small prick, but discomfort is minimal.

158 services102 patients

Diagnostic exam of bladder and urethra using an endoscope 52000

This procedure involves using a thin, flexible tube with a light, called an endoscope, to examine the bladder and urethra. It helps in identifying any abnormalities or issues that may be causing discomfort or other symptoms.

86 services80 patients

Ultrasound measurement of bladder capacity after voiding 51798

Ultrasound measurement of bladder capacity after voiding is a non-invasive test that uses sound waves to create images of your bladder. It's done after you've emptied your bladder to see if there's any leftover urine, which can help diagnose certain conditions.

82 services66 patients

Chronic care management services for two or more chronic conditions, additional 20 minutes of clinical staff time directed by health care professional, per calendar month 99439

Chronic Care Management services involve regular check-ins with healthcare professionals to manage two or more chronic conditions. It includes an additional 20 minutes of clinical staff time per month, directed by a healthcare professional, to ensure optimal health management.

60 services19 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.

59 services56 patients

Limited ultrasound scan behind abdominal cavity 76775

A limited ultrasound scan behind the abdominal cavity is a non-invasive imaging method that helps visualize structures in the back of your abdomen. This procedure uses sound waves to create pictures of these areas, assisting in diagnosing certain conditions.

58 services48 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.

50 services50 patients

Limited ultrasound scan of pelvis 76857

A limited ultrasound scan of the pelvis is a non-invasive imaging test. It uses high-frequency sound waves to create pictures of the lower abdomen area. This helps doctors view and assess the health of certain internal structures. It's painless and usually takes about 30 minutes.

49 services47 patients

Biopsy of prostate gland 55700

A biopsy of the prostate gland is a procedure where a small sample of tissue is taken from your body's internal gland, located near the bladder, for testing. This helps in diagnosing potential health issues. It's usually done with a fine needle and imaging technology for accuracy.

41 services41 patients

Ultrasound scan of pelvic region through rectum 76872

An ultrasound scan of the pelvic region through the rectum is a medical procedure where a small, smooth device is gently inserted into the rectum. This device uses sound waves to create images of the internal structures in the lower abdomen, aiding in diagnosis and treatment planning.

41 services41 patients

Electronic assessment of bladder emptying 51741

Electronic assessment of bladder emptying is a non-invasive test that measures how well your bladder functions. It uses ultrasound technology to create images of your bladder before and after you use the restroom, helping to identify any issues with bladder emptying.

26 services24 patients

Other procedure on male genital system 55899

This procedure refers to a variety of medical interventions on the male reproductive system. It could be diagnostic, therapeutic, or preventive. It's done to maintain or improve reproductive health. It's always performed by a skilled medical professional.

22 services21 patients

Ultrasound scan of scrotum 76870

An ultrasound scan of the scrotum is a non-invasive imaging test. It uses sound waves to create pictures of the structures within the lower abdominal area. This helps to assess any discomfort or abnormalities you might be experiencing. The procedure is safe and painless.

17 services16 patients

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

17 services17 patients

Injection procedure to cause erection 54235

This procedure involves administering a medication into your body to stimulate blood flow. It's designed to aid specific physical responses, similar to how adrenaline can increase heart rate. The medication is introduced via a small needle, and the effects typically occur shortly after.

11 services11 patients

Hospital Affiliations CMS Care Compare 4

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

University Of MD Capital Region Medical Center

Acute Care Hospitals · Upper Marlboro, MD

2/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number210003

Location901 North Harry S Truman DriveUpper Marlboro, MD 20774 · Prince Georges County

Emergency services Birthing friendly

Saint Agnes Hospital

Acute Care Hospitals · Baltimore, MD

4/5 CMS rating

OwnershipVoluntary non-profit - Church

CMS Certification Number210011

Location900 Caton AvenueBaltimore, MD 21229 · Baltimore City County

Emergency services Birthing friendly

Luminis Health Anne Arundel Medical Center, Inc

Acute Care Hospitals · Annapolis, MD

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number210023

Location2001 Medical ParkwayAnnapolis, MD 21401 · Anne Arundel County

Emergency services Birthing friendly

Medstar Southern Maryland Hospital Center

Acute Care Hospitals · Clinton, MD

2/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number210062

Location7503 Surratts RoadClinton, MD 20735 · Prince Georges County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 21401 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

$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.

83.56/100

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

Scored as part of a group practice

Quality

81.55

Promoting Interoperability

Improvement Activities

Cost

71.16

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.

Intermittent urinary catheter; coude (curved) tip, with or without coating (teflon, silicone, silicone elastomeric, or hydrophilic, etc.), each A4352

DME-Orthotic Devices · category DF008N

1 supplier17 claims2,290 services$6.13 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 6

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

NEIL MENDHIRATTA MD

Urology