DR. MARGARET MICHELE WILLIAMS DNP(C) CRNP, OCN
NPI 1831553585
Nurse Practitioner in Easton, MD

Q: What is Margaret Williams's NPI number?

The NPI number for Margaret Williams is 1831553585. It was assigned to this individual provider in the NPPES registry on April 8, 2016.

Q: What is Margaret Williams's specialty?

The primary specialty registered for this NPI is Nurse Practitioner with taxonomy code 363L00000X.

Q: When was this NPI record last updated?

The NPPES record for Margaret Williams was last updated on May 14, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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 April 08, 2016PECOS EnrolledAccepts Medicare Assignment

8221 TEAL DR STE 302, EASTON, MD 21601(410) 820-5945(410) 820-9642 Get Directions Write a Review

NPPES record last updated: May 14, 2024. Verified against the NPPES registry weekly; last sync: November 01, 2026.

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About Dr. Margaret Michele Williams Dnp(c) Crnp, Ocn NPPES

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

DR. MARGARET MICHELE WILLIAMS DNP(C) CRNP, OCN (NPI 1831553585) is an individual nurse practitioner in Easton, Maryland, licensed in Maryland (R111860) and active in the NPI registry since April 2016. She is enrolled in Medicare PECOS, is affiliated with Luminis Health Anne Arundel Medical Center, Inc, and is a graduate of Other (2013).

NPPES Registry Identity

NPI1831553585

Entity TypeIndividualFemale

Primary Taxonomy363L00000X

Provider Legal NameDR. MARGARET MICHELE WILLIAMSCredential: DNP(C) CRNP, OCN

Location Address8221 TEAL DR STE 302Easton, MD 21601-7215

Mailing AddressPo Box 749495Atlanta, GA 30374-9495 · (855) 963-2100 · Fax (813) 321-1296

Phone(410) 820-5945

Fax(410) 820-9642

Sole ProprietorNo

Medical School CMSOtherGraduated 2013

Enumeration DateApril 8, 2016

Last NPPES UpdateMay 14, 2024

NPPES CertifiedMay 14, 2024

✔ NPI 1831553585 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyNurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers

Taxonomy Code363L00000X

License✔ Licensed in MD · R111860

Definition

(1) A registered nurse provider with a graduate degree in nursing prepared for advanced practice involving independent and interdependent decision making and direct accountability for clinical judgment across the health care continuum or in a certified specialty. (2) A registered nurse who has completed additional training beyond basic nursing education and who provides primary health care services in accordance with state nurse practice laws or statutes. Tasks performed by nurse practitioners vary with practice requirements mandated by geographic, political, economic, and social factors. Nurse practitioner specialists include, but are not limited to, family nurse practitioners, gerontological nurse practitioners, pediatric nurse practitioners, obstetric-gynecologic nurse practitioners, and school nurse practitioners.

Also ListedNurse Practitioner · Adult HealthTaxonomy 363LA2200X · License R111860 (MD)

Also ListedNurse Practitioner · GerontologyTaxonomy 363LG0600X · License R111860 (MD)

8221 TEAL DR STE 302, Easton, MD 21601

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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

Dr. Margaret Michele Williams Dnp(c) Crnp, Ocn 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 ID3173807526

PECOS Enrollment IDI20170302000271

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 Margaret Williams reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Bay Hematology Oncology PA

Same address

Specialist

8221 TEAL DR, SUITE 301
Easton, MD 21601

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

NPI 1043321532 (410) 820-5945

Talbot Hospice Foundation, Inc

1.1 mi

Hospice Care, Community Based

586 CYNWOOD DR
Easton, MD 21601

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

NPI 1194135749 (410) 822-6681

Compass Regional Hospice, Inc

18 mi

Hospice and Palliative Medicine

255 COMET DR
Centreville, MD 21617

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

NPI 1578923942 (443) 262-4100

University Of Maryland Community Medical Group, Inc.

40 mi

Surgical

301 HOSPITAL DR
Glen Burnie, MD 21061

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

NPI 1295367894 (410) 787-4000

American Oncology Partners PA

377 mi

Hematology & Oncology

3100 PLAZA PROPERTIES BLVD
Columbus, OH 43219

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

NPI 1265929723 (614) 383-6000

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 16

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, ferric carboxymaltose, 1 mg J1439

Ferric carboxymaltose is an iron supplement injection. It's given when your body needs more iron than you can consume through diet, like in anemia. The injection is administered by a healthcare professional into a vein.

44,250 services40 patients

Injection, darbepoetin alfa, 1 microgram (non-esrd use) J0881

Darbepoetin alfa injection is a medication used to treat anemia (low red blood cell count) often caused by chronic kidney disease or chemotherapy. It works by stimulating your body to produce more red blood cells, helping to increase your energy and well-being.

17,100 services60 patients

Injection, ferric derisomaltose, 10 mg J1437

Ferric derisomaltose is an iron replacement product. It's given as an injection to treat iron deficiency anemia, a condition where the body lacks enough iron. The injection helps increase iron in your body to healthy levels.

2,600 services23 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.

1,980 services23 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.

356 services262 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.

201 services102 patients

Injection, dexamethasone sodium phosphate, 1 mg J1100

Dexamethasone sodium phosphate is a medication given via injection. It is a type of steroid that helps reduce inflammation and immune responses. It can be used to treat a variety of conditions, such as allergies, skin conditions, arthritis, and more.

182 services13 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.

130 services111 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.

94 services68 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.

54 services54 patients

Injection of additional new drug or substance into vein 96375

This procedure involves introducing a new medication or substance into your bloodstream via a vein. It's typically done using a small needle. The substance can help treat various conditions or assist in diagnostic procedures. It's generally safe and monitored by professionals.

51 services20 patients

Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more 99212

This is a routine check-up for patients who have previously seen the doctor. During this 10-19 minute visit, the doctor will review your health status, discuss any concerns, and manage ongoing treatments or medications. It's a chance to ensure your health is on track.

43 services40 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.

34 services26 patients

Telephone medical discussion with physician, 5-10 minutes 99441

A telephone medical discussion with a physician is a brief, 5-10 minute call where you can discuss your health concerns. It's a convenient way to receive medical advice without needing to visit a clinic. It's important to prepare questions in advance to make the most of this time.

22 services21 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.

21 services20 patients

Telephone medical discussion with physician, 11-20 minutes 99442

This is a service where you have a phone conversation with your doctor for 11-20 minutes. It's used for discussing health concerns, reviewing test results, or managing ongoing conditions. It's a convenient way to receive medical advice without an in-person visit.

20 services17 patients

Hospital Affiliations CMS Care Compare 3

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

University Of MD Shore Medical Ctr At Chestertown

Acute Care Hospitals · Chestertown, MD

OwnershipVoluntary non-profit - Private

CMS Certification Number210030

Location100 Brown StreetChestertown, MD 21620 · Kent County

Emergency services

University Of MD Shore Medical Center At Easton

Acute Care Hospitals · Easton, MD

2/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number210037

Location219 South Washington StreetEaston, MD 21601 · Talbot County

Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 21601 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

$89.75 typical visit price

range $57.99 – $175.57

Typical copayment $22.43 (range $14.49 – $43.89)

Most-billed visit code 99203

Established Patient

$102.11 typical visit price

range $18.66 – $143.02

Typical copayment $25.52 (range $4.66 – $35.75)

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 3

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

COLLEEN MONAGHAN APRN

Nurse Practitioner

8221 TEAL DR STE 302
EASTON, MD 21601

Talbot County (410) 820-5945

AMERICAN ONCOLOGY PARTNERS, P.A.

Internal Medicine (Hematology & Oncology)

8221 TEAL DR STE 302
EASTON, MD 21601

Talbot County (410) 820-5945

QIWEI W. GAI MD

Internal Medicine (Hematology & Oncology)

8221 TEAL DR STE 302
EASTON, MD 21601

Talbot County (410) 820-5945

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 Margaret Williams's NPI number?

The NPI number for Margaret Williams is 1831553585. It was assigned to this individual provider in the NPPES registry on April 8, 2016.

Where is Margaret Williams located?

Margaret Williams practices at 8221 Teal Dr Ste 302, Easton, MD 21601. The listed phone number is (410) 820-5945.

What is Margaret Williams's specialty?

The primary specialty registered for this NPI is Nurse Practitioner with taxonomy code 363L00000X.

Is Margaret Williams enrolled in Medicare?

Yes. Margaret Williams 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 Margaret Williams's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Margaret Williams reassigns Medicare benefits to 5 organizations: Bay Hematology Oncology PA (Easton, MD), Talbot Hospice Foundation, Inc (Easton, MD), Compass Regional Hospice, Inc (Centreville, MD), University Of Maryland Community Medical Group, Inc. (Glen Burnie, MD) and American Oncology Partners PA (Columbus, OH). 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 Margaret Williams's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Margaret Williams affiliated with any hospitals?

According to CMS data, Margaret Williams is affiliated with Luminis Health Anne Arundel Medical Center, Inc, University Of MD Shore Medical Ctr At Chestertown and University Of MD Shore Medical Center At Easton.

When was this NPI record last updated?

The NPPES record for Margaret Williams was last updated on May 14, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.