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DERRICK ALWYN FOX M.D.
NPI 1336403237
Psychiatry & Neurology - Neurology in Columbia, MD

Active since June 26, 2012PECOS EnrolledAccepts Medicare Assignment
11055 LITTLE PATUXENT PKWY STE 203, COLUMBIA, MD 21044(443) 524-0885(443) 524-0887 Get Directions Write a Review

NPPES record last updated: February 21, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Feb 21, 2025, May 15, 2024, Aug 5, 2022 and 3 more (6 updates tracked since 2015).

About Derrick Alwyn Fox M.d. NPPES

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

DERRICK ALWYN FOX M.D. (NPI 1336403237) is an individual neurology provider in Columbia, Maryland, licensed in Maryland (D0091936) and active in the NPI registry since June 2012. He is enrolled in Medicare PECOS and is a graduate of Duke University School Of Medicine (2019).

NPPES Registry Identity

NPI1336403237
Entity TypeIndividualMale
Primary Taxonomy2084N0400X
Provider Legal NameDERRICK ALWYN FOXCredential: M.D.
Location Address11055 LITTLE PATUXENT PKWY STE 203Columbia, MD 21044-2898
Mailing Address11055 Little Patuxent Pkwy Ste 203Columbia, MD 21044-2898 · (443) 524-0885 · Fax (443) 524-0887
Phone(443) 524-0885
Fax(443) 524-0887
Sole ProprietorYes
Medical School CMSDuke University School Of MedicineGraduated 2019
Enumeration DateJune 26, 2012
Last NPPES UpdateFebruary 21, 20256 updates tracked since enumeration
NPPES CertifiedFebruary 21, 2025
✔ NPI 1336403237 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPsychiatry & Neurology · NeurologyAllopathic & Osteopathic Physicians
Taxonomy Code2084N0400X
Licenses✔ Licensed in MD · D0091936✔ Licensed in NC · 2018-01193✔ Licensed in IL · 036150058
Definition
A Neurologist specializes in the diagnosis and treatment of diseases or impaired function of the brain, spinal cord, peripheral nerves, muscles, autonomic nervous system, and blood vessels that relate to these structures.
Also ListedPsychiatry & Neurology · Neuromuscular MedicineTaxonomy 2084N0008X · License DO091936 (MD)
11055 LITTLE PATUXENT PKWY STE 203, Columbia, MD 21044
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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

Derrick Alwyn Fox 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 ID2264736578
PECOS Enrollment IDI20220616001724
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

2

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

Maryland Neuromuscular Center LLC
Same address
Neurology
11055 LITTLE PATUXENT PKWY STE 203
Columbia, MD 21044
  • Reassigned Medicare billing, Maryland enrollment
NPI 1881443554 (443) 524-0885
Medstar Medical Group II LLC
19 mi
General Practice
5601 LOCH RAVEN BLVD, RUSSELL MORGAN BLDG 3RD FL
Baltimore, MD 21239
  • Reassigned Medicare billing, Maryland enrollment
  • 2,602 clinicians in this Medicare group
NPI 1184046187 (443) 444-5606

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 8

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.

Needle measurement of electrical activity in arm or leg muscles, limited study 95885
This procedure, known as an electromyography (EMG), involves placing tiny needles into your arm or leg muscles to measure their electrical activity. It's a limited study, meaning only specific muscles are tested. This helps identify any muscle or nerve dysfunction.
196 services67 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.
150 services103 patients
Nerve conduction, 13 or more studies 95913
Nerve conduction studies involve 13 or more tests to check the speed and strength of signals traveling between your nerves and muscles. It helps diagnose conditions affecting nerves and muscles. The test involves small shocks and may cause minor discomfort.
63 services53 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.
38 services38 patients
Prolonged office or other outpatient evaluation and management service(s) beyond the maximum required time of the primary procedure which has been selected using total time on the date of the primary service; each additional 15 minutes by the physician or G2212
This service refers to extended doctor visits where your healthcare provider spends additional time evaluating and managing your health beyond the primary procedure's required time. This includes each extra 15 minutes spent by the physician on the same day as the primary service.
24 services14 patients
Nerve conduction, 11-12 studies 95912
Nerve conduction studies are tests that measure how well your nerves are working. In 11-12 studies, small electrodes are placed on your skin to send and receive electrical signals. These signals show how quickly and effectively your nerves are transmitting signals, helping to identify any nerve damage or dysfunction.
20 services20 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 21044 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.

Other Providers at the Same Location NPPES

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

MARYLAND NEUROMUSCULAR CENTER LLC
Psychiatry & Neurology (Neurology)
11055 LITTLE PATUXENT PKWY STE 203
COLUMBIA, MD 21044
Howard County (443) 524-0885

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 Derrick Fox's NPI number?

The NPI number for Derrick Fox is 1336403237. It was assigned to this individual provider in the NPPES registry on June 26, 2012.

Where is Derrick Fox located?

Derrick Fox practices at 11055 Little Patuxent Pkwy Ste 203, Columbia, MD 21044. The listed phone number is (443) 524-0885.

What is Derrick Fox's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Neurology, with taxonomy code 2084N0400X.

Is Derrick Fox enrolled in Medicare?

Yes. Derrick Fox 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 Derrick Fox's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Derrick Fox reassigns Medicare benefits to 2 organizations: Maryland Neuromuscular Center LLC (Columbia, MD) and Medstar Medical Group II LLC (Baltimore, MD). 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 Derrick Fox's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Derrick Fox was last updated on February 21, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 20 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.