NPPES file of Aug 9, 2026

Anna Marie Chamberlain, FNP-BC

Family Nurse Practitioner · Easton, MD

Anna Marie Chamberlain, FNP-BC is a family nurse practitioner with a practice address in Easton, Maryland, and NPI 1033981394, issued on Oct 30, 2023. Check the license (Maryland R165825, as entered in NPPES) with the Maryland board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1033981394
Name
Anna Marie Chamberlain
Credential
FNP-BC
Primary taxonomy
Family Nurse Practitioner 363LF0000X
License number
R165825 MD
Self-reported in NPPES; status is on the state search
Practice location
8579 Commerce Dr Ste 104, Easton, MD 21601
Phone
(410) 822-9133
Enumerated
Oct 30, 2023
Record last updated
Oct 30, 2023
Fax
(410) 822-9513
Medicare enrollment
Enrolled (PECOS I20240103000786); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 8579 Commerce Dr Ste 104

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Emily AckissWomen's Health Nurse Practitioner1821507849
  2. Molly StevensonFamily Nurse Practitioner1578371712
  3. Katie Sullivan, NPFamily Nurse Practitioner1649524059

Verify Anna Marie Chamberlain in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Maryland board licenses this profession
    Search for license R165825
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the Maryland license search

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47% fewer Medicare Part D claims than the average family nurse practitioner in 2024

695 Medicare Part D claims for 164 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D. Brand-name drugs were 7% of claims.

  1. Anna Chamberlain695
  2. Specialty average1,305

Most prescribed

  1. Atorvastatin Calcium52 claims
  2. Lisinopril36 claims
  3. Levothyroxine Sodium30 claims
  4. Amlodipine Besylate25 claims
  5. Hydrochlorothiazide23 claims
  6. Escitalopram Oxalate22 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Industry payments in 2024: $39.26

2 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 99,489 providers of this specialty with any payment received $650.95 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Anna Chamberlain$39.26
  2. Specialty average$650.95

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through one group practice

  1. Comprehensive Rehab Consultants PLLCDenton, MD

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Anna Marie Chamberlain among 4,124 family nurse practitioner records in Maryland

Anna Marie Chamberlain, FNP-BC is one of 4,124 family nurse practitioner records with a practice address in Maryland. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2023, is newer than 78% of them.

  • NPI issued2023 · 78% of these records are older, 14% newer
  • In a Medicare fileYes · 74% of these records are
  • In the CMS Doctors and Clinicians fileYes · 58% of these records are
  • Graduated2023 · median 2019 among the 2,370 with a school on file
  • Record last updated2023 · 41% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LF0000X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

52 family nurse practitioner records list a practice address in Easton

They are 52 of the 928 NPPES records with a practice address in Easton, and 4,124 family nurse practitioner records in Maryland.

The 8 family nurse practitioner records with the nearest ZIP codes

  1. Bobbi Atkinson, RN-BC, MSN, CRNPEaston, MD 216011720386030
  2. Allison Baynard, CRNP-FEaston, MD 216011649422254
  3. Trisha Coulbourn, NP-CEaston, MD 216011154721231
  4. Susan Delean-Botkin, CRNPEaston, MD 216011043306335
  5. Mary Dunlavey, FNPEaston, MD 216011386848646
  6. Jennifer Dyott, CRNPEaston, MD 216011508294745
  7. Mary Forbes, C.R.N.P.Easton, MD 216011467419671
  8. Sally Dale Jafari, CRNPEaston, MD 216011174517668

Common questions

What is Anna Marie Chamberlain, FNP-BC's NPI number?

Anna Marie Chamberlain, FNP-BC's National Provider Identifier (NPI) is 1033981394, issued on Oct 30, 2023. An NPI identifies a provider in billing; it is not a license.

Where is Anna Marie Chamberlain, FNP-BC located?

The NPPES record lists a practice address at 8579 Commerce Dr Ste 104, Easton, MD, 21601. Phone: (410) 822-9133. Providers update this record themselves, so call before visiting.

How can I verify Anna Marie Chamberlain, FNP-BC's license?

NPPES lists Maryland license number R165825, as entered by the provider. Search the Maryland board that licenses this profession; the NPPES record confirms identity only.

How much does Anna Marie Chamberlain, FNP-BC prescribe under Medicare Part D?

In 2024, Anna Marie Chamberlain, FNP-BC had 695 Medicare Part D claims for 164 beneficiaries; the average among family nurse practitioner prescribers was 1,305. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.