DR. WILLIAM C. MAXTED JR. M.D.
NPI 1659388502
Internal Medicine - Cardiovascular Disease in Annapolis, MD

Q: What is William Maxted's NPI number?

The NPI number for William Maxted is 1659388502. It was assigned to this individual provider in the NPPES registry on August 2, 2006.

Q: What is William Maxted's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.

Q: When was this NPI record last updated?

The NPPES record for William Maxted was last updated on April 1, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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 August 02, 2006PECOS EnrolledAccepts Medicare Assignment

2002 MEDICAL PKWY, STE 500, ANNAPOLIS, MD 21401(410) 573-6480(410) 573-9413 Get Directions Write a Review

NPPES record last updated: April 1, 2008. Verified against the NPPES registry weekly; last sync: November 01, 2026.

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About Dr. William C. Maxted Jr. M.d. NPPES

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

DR. WILLIAM C. MAXTED JR. M.D. (NPI 1659388502) is an individual cardiovascular disease provider in Annapolis, Maryland, licensed in Maryland (D56322) and active in the NPI registry since August 2006. He is enrolled in Medicare PECOS, is affiliated with Luminis Health Anne Arundel Medical Center, Inc, and is a graduate of Georgetown University School Of Medicine (1992).

NPPES Registry Identity

NPI1659388502

Entity TypeIndividualMale

Primary Taxonomy207RC0000X

Provider Legal NameDR. WILLIAM C. MAXTED JR.Credential: M.D.

Location Address2002 MEDICAL PKWY, STE 500Annapolis, MD 21401-3046

Mailing Address106 Irving St Nw, Ste 2700nWashington, DC 20010-2927 · (202) 723-5524 · Fax (202) 291-0512

Phone(410) 573-6480

Fax(410) 573-9413

Sole ProprietorNo

Medical School CMSGeorgetown University School Of MedicineGraduated 1992

Enumeration DateAugust 2, 2006

Last NPPES UpdateApril 1, 2008

✔ NPI 1659388502 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Cardiovascular DiseaseAllopathic & Osteopathic Physicians

Taxonomy Code207RC0000X

License✔ Licensed in MD · D56322

Definition

An internist who specializes in diseases of the heart and blood vessels and manages complex cardiac conditions such as heart attacks and life-threatening, abnormal heartbeat rhythms.

2002 MEDICAL PKWY, Annapolis, MD 21401

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Other Identifiers 6

Medicare PINF62098MD

Medicare PIN007467C29DC

Medicare PIN409629DC

Medicare PINCD0361MD

Medicare PIN066MMD

Medicare PIN066M895EMD

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. William C. Maxted Jr. 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 ID1355520552

PECOS Enrollment IDI20110120000090, I20110607000405

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 William Maxted reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Cardiology Associates, LLC

Same address

Specialist

2002 MEDICAL PKWY, SUITE 520
Annapolis, MD 21401

Reassigned Medicare billing, Maryland and District of Columbia enrollments
Also billed through NPI 1760789184 (District of Columbia)
40 clinicians in this Medicare group

NPI 1114224573 (410) 571-8430

Capitol Cardiologic, LLP

0.2 mi

Cardiovascular Disease

2001 MEDICAL PKWY
Annapolis, MD 21401

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

NPI 1427109776 (443) 481-1881

Medstar Medical Group II LLC

26 mi

General Practice

5601 LOCH RAVEN BLVD, RUSSELL MORGAN BLDG 3RD FL
Baltimore, MD 21239

Reassigned Medicare billing, District of Columbia and Maryland enrollments
3,530 clinicians in this Medicare group

NPI 1184046187 (443) 444-5606

Medstar Heart Institute LLC

26 mi

Surgery

110 IRVING ST NW, ATTN: MEDICAL AFFAIRS
Washington, DC 20010

Reassigned Medicare billing, District of Columbia and Maryland enrollments
277 clinicians in this Medicare group

NPI 1528345378 (202) 877-5284

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 24

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.

1,373 services873 patients

Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report 93000

An electrocardiogram (ECG) is a non-invasive test that records your heart's electrical activity. Using 12 leads attached to your body, it captures data to help identify heart conditions. A doctor interprets the results and provides a report.

1,219 services875 patients

Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only 93010

A routine electrocardiogram (ECG) with 12 leads is a simple, non-invasive test that records the electrical activity of your heart. It helps in identifying heart conditions by detecting irregularities in your heart rhythms. The results are interpreted and a report is provided.

805 services714 patients

Evaluation of cardiac rhythm monitor system, remote up to 30 days 93298

This procedure involves remotely monitoring your heart rhythm for up to 30 days. A small device will record your heart's activity, which can be accessed by your healthcare team. This aids in diagnosing any irregularities or issues with your heart function.

569 services67 patients

Programming of dual lead pacemaker system 93280

Programming of a dual lead pacemaker system is a procedure to adjust your heart's pacemaker settings. This process involves a small device, called a programmer, that communicates with your pacemaker to ensure it's working optimally for your heart's needs.

303 services210 patients

Ultrasound of heart with color-depicted blood flow, rate, direction and valve function 93306

This is a heart ultrasound, also known as an echocardiogram. It uses sound waves to create pictures of your heart, showing how blood flows through it. The color depicts the blood flow's speed and direction. It also checks the heart's valves to ensure they're working properly.

296 services285 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.

143 services143 patients

Injection, regadenoson, 0.1 mg J2785

Regadenoson injection, 0.1 mg, is a medication used to help visualize the heart during a stress test. It works by increasing blood flow in the arteries of the heart. It's injected into a vein and is generally well-tolerated.

128 services32 patients

Ultrasound of heart with color-depicted blood flow, rate, direction and valve function 93306

112 services110 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.

102 services83 patients

Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223

Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.

101 services97 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233

Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.

100 services66 patients

Exercise or drug-induced heart stress test with electrocardiogram (ecg) with supervision and review by physician 93015

An exercise or drug-induced heart stress test with ECG is a procedure performed by a doctor to assess how your heart responds to exertion. It involves monitoring your heart's electrical activity while you exercise or after medication is given to mimic exercise effects.

74 services74 patients

Technetium tc-99m tetrofosmin, diagnostic, per study dose A9502

Technetium Tc-99m Tetrofosmin is a radiopharmaceutical used in diagnostic imaging. It helps highlight areas of concern in the heart by emitting signals captured by a special camera. This assists doctors in detecting heart conditions.

69 services69 patients

Nuclear medicine studies of heart muscle at rest and with stress and spect 78452

Nuclear medicine studies of the heart involve two parts: rest and stress. During rest, images are taken of your heart at ease. During stress, images are taken after exercise or medication-induced stress. SPECT is a special imaging technique providing 3D pictures of your heart, helping identify any issues.

67 services67 patients

Programming of single lead pacemaker system 93279

Programming of a single lead pacemaker system involves adjusting the pacemaker's settings to suit your heart's unique needs. This is done using a special device that communicates with the pacemaker, ensuring it helps your heart beat at an optimal rate.

40 services31 patients

Evaluation of single, dual, multiple lead or leadless pacemaker system, remote up to 90 days 93294

This procedure evaluates your pacemaker system remotely for up to 90 days. It checks whether single, dual, multiple lead, or leadless pacemakers are working properly. It's a safe, convenient way to ensure your heart device is functioning optimally.

28 services27 patients

Evaluation of single, dual, multiple lead or leadless pacemaker system 93288

An evaluation of a pacemaker system examines how well your heart device is working. Single, dual, multiple lead, or leadless refers to the wires that deliver electrical pulses from the pacemaker to your heart. This check ensures your heart is receiving the right amount of support from the device.

23 services22 patients

External shock to heart to regulate heart beat 92960

This procedure, known as cardioversion, uses an external electrical shock to restore your heart's normal rhythm. It's typically performed when irregular heartbeats, or arrhythmias, are causing severe symptoms and aren't responding to medications.

19 services19 patients

Evaluation of single, dual, multiple lead or leadless pacemaker system or implantable defibrillator system, remote up to 90 days 93296

This procedure involves remotely monitoring your pacemaker or implantable defibrillator system. Over a 90-day period, we check the device's performance and your heart's activity. This helps ensure the device is functioning properly and providing the best possible support for your heart health.

19 services19 patients

Removal and replacement of dual lead permanent pacemaker 33228

This procedure involves removing an old dual lead pacemaker and replacing it with a new one. A pacemaker helps regulate your heart's rhythm. The dual lead model has two wires connecting to your heart to improve its electrical signaling. The replacement is done under local anesthesia.

15 services15 patients

Injection, aminophyllin, up to 250 mg J0280

An aminophyllin injection is a treatment often used for severe asthma or other lung conditions. It helps to relax and open air passages in the lungs, making it easier to breathe. Up to 250 mg can be administered in one dose.

15 services15 patients

Insertion of pacemaker and upper and lower heart chamber electrode 33208

A pacemaker insertion is a procedure where a small device, called a pacemaker, is implanted under your skin. This device uses electrical pulses to prompt the heart to beat at a normal rate. Electrodes are placed in the upper and lower chambers of your heart to help regulate your heartbeat.

14 services14 patients

Insertion of heart rhythm monitor under skin 33285

The insertion of a heart rhythm monitor under the skin is a procedure to track your heart's activity. A small device is placed under your skin, recording your heart's rhythms continuously. This helps identify irregular heartbeats or conditions, aiding in your treatment.

11 services11 patients

Hospital Affiliations CMS Care Compare

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

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

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.

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. LAWRENCE J KREBS PHARMD

Pharmacist

2002 MEDICAL PKWY, STE 170
ANNAPOLIS, MD 21401

Anne Arundel County (410) 573-6900

JOHN HAROLD LOSSING M.D.

Psychiatry & Neurology (Neurology)

2002 MEDICAL PKWY, SUITE 430
ANNAPOLIS, MD 21401

Anne Arundel County (410) 266-2740

LUQMAN K DAD MD

Radiology (Radiation Oncology)

2002 MEDICAL PKWY, SUITE 235
ANNAPOLIS, MD 21401

Anne Arundel County (410) 266-2770

SADIA JAHAN SHAFI

Internal Medicine (Cardiovascular Disease)

2002 MEDICAL PKWY, SUITE 310
ANNAPOLIS, MD 21401

Anne Arundel County (410) 224-0040

DR. JONATHAN A ALTSCHULER M.D.

Internal Medicine (Cardiovascular Disease)

2002 MEDICAL PKWY, STE 500
ANNAPOLIS, MD 21401

Anne Arundel County (410) 573-6480

RICHARD MICHAEL PODOLIN PH D

Psychologist

2002 MEDICAL PKWY, SUITE 430
ANNAPOLIS, MD 21401

Anne Arundel County (410) 757-1005

JONATHAN KIEV MD PA LLC

Thoracic Surgery (Cardiothoracic Vascular Surgery)

2002 MEDICAL PKWY, STE 660
ANNAPOLIS, MD 21401

Anne Arundel County (877) 503-2609

LUMINIS HEALTH MEDICAL GROUP, LLC

Family Medicine

2002 MEDICAL PKWY, SUITE 670
ANNAPOLIS, MD 21401

Anne Arundel County (443) 481-1150

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 William Maxted's NPI number?

The NPI number for William Maxted is 1659388502. It was assigned to this individual provider in the NPPES registry on August 2, 2006.

Where is William Maxted located?

William Maxted practices at 2002 Medical Pkwy Ste 500, Annapolis, MD 21401. The listed phone number is (410) 573-6480.

What is William Maxted's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.

Is William Maxted enrolled in Medicare?

Yes. William Maxted 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.

Which organizations bill Medicare for William Maxted's services?

According to the CMS Revalidation Reassignment List (October 2026 release), William Maxted reassigns Medicare benefits to 4 organizations: Cardiology Associates, LLC (Annapolis, MD), Capitol Cardiologic, LLP (Annapolis, MD), Medstar Medical Group II LLC (Baltimore, MD) and Medstar Heart Institute LLC (Washington, DC). Each 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 William Maxted's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is William Maxted affiliated with any hospitals?

According to CMS data, William Maxted is affiliated with Luminis Health Anne Arundel Medical Center, Inc.

When was this NPI record last updated?

The NPPES record for William Maxted was last updated on April 1, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.