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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

ALYSSA BEST CRNP
NPI 1053984641
Nurse Practitioner - Family in Frederick, MD

Active since July 21, 2021PECOS EnrolledAccepts Medicare Assignment
180 THOMAS JOHNSON DR STE 202, FREDERICK, MD 21702(301) 631-6877(301) 631-1592 Get Directions Write a Review

NPPES record last updated: October 8, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Oct 8, 2026, Jul 7, 2023, Jul 21, 2021 (3 updates tracked since 2021).

About Alyssa Best Crnp NPPES

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

ALYSSA BEST CRNP (NPI 1053984641) is an individual family provider in Frederick, Maryland, licensed in Maryland (R236068) and active in the NPI registry since July 2021. She is enrolled in Medicare PECOS, is affiliated with Frederick Health Hospital, and is a graduate of Other (2021).

NPPES Registry Identity

NPI1053984641
Entity TypeIndividualFemale
Primary Taxonomy363LF0000X
Provider Legal NameALYSSA BESTCredential: CRNP
Location Address180 THOMAS JOHNSON DR STE 202Frederick, MD 21702-4550
Mailing Address180 Thomas Johnson Dr Ste 202Frederick, MD 21702-4550 · (301) 631-6877 · Fax (301) 631-1592
Phone(301) 631-6877
Fax(301) 631-1592
Sole ProprietorNo
Medical School CMSOtherGraduated 2021
Enumeration DateJuly 21, 2021
Last NPPES UpdateOctober 8, 20263 updates tracked since enumeration
NPPES CertifiedOctober 8, 2026
✔ NPI 1053984641 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse Practitioner · FamilyPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LF0000X
License✔ Licensed in MD · R236068
180 THOMAS JOHNSON DR STE 202, Frederick, MD 21702
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Oscar Health.Insurance ›

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

Alyssa Best Crnp 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 ID3779972898
PECOS Enrollment IDI20211111000776
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

4

Medicare enrollment records show Alyssa Best reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Cardiovascular Specialists Of Frederick, LLC
Same address
Specialist
180 THOMAS JOHNSON DR, 202
Frederick, MD 21702
  • Reassigned Medicare billing, Maryland enrollment
  • 13 clinicians in this Medicare group
NPI 1922034461 (301) 631-6877
Carroll Family Medicine, LLC
31 mi
Family Medicine
814 HOUCKSVILLE RD
Hampstead, MD 21074
  • Reassigned Medicare billing, Maryland enrollment
  • 2 clinicians in this Medicare group
NPI 1043240708 (410) 239-0406
Privia Care Center LLC
42 mi
Internal Medicine
950 N GLEBE RD, SUITE 4000
Arlington, VA 22203
  • Reassigned Medicare billing, Maryland enrollment
  • 339 clinicians in this Medicare group
NPI 1164874426 (571) 366-8850
Privia Medical Group, LLC
42 mi
Internal Medicine
950 N GLEBE RD STE 700
Arlington, VA 22203
  • Reassigned Medicare billing, Maryland enrollment
  • 668 clinicians in this Medicare group
NPI 1013042480 (571) 366-8850

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 7

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.
169 services88 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.
117 services67 patients
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit G0439
An annual wellness visit is a yearly appointment with your primary care provider to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's a subsequent visit, meaning it follows an initial assessment.
49 services49 patients
Administration of influenza virus vaccine G0008
The administration of the influenza virus vaccine, also known as the flu shot, is a simple procedure to protect against the flu. A healthcare provider injects a small dose of the vaccine into your arm. This stimulates your immune system to produce antibodies, which will help your body fight off the flu if exposed.
35 services35 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.
28 services28 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.
20 services18 patients

Hospital Affiliations CMS Care Compare

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

Frederick Health Hospital

Acute Care Hospitals · Frederick, MD
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number210005
Location400 West Seventh StFrederick, MD 21701 · Frederick County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 21702 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.

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.

Nebulizer, with compressor E0570
DME-Other DME · category DE000N
1 supplier41 claims42 services$3.13 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 4

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

MICHAEL SIMON DIGIACOMO
Physician Assistant
180 THOMAS JOHNSON DR STE 202
FREDERICK, MD 21702
Frederick County (301) 631-6877
MRS. AMANDA DIANE KALLAS CRNP
Nurse Practitioner (Family)
180 THOMAS JOHNSON DR STE 202
FREDERICK, MD 21702
Frederick County (301) 631-6877
ARCHANA SODAGAM M.D.
Internal Medicine (Cardiovascular Disease)
180 THOMAS JOHNSON DR STE 202
FREDERICK, MD 21702
Frederick County (301) 631-6877
MONICA DHADUK
Physician Assistant (Medical)
180 THOMAS JOHNSON DR STE 202
FREDERICK, MD 21702
Frederick County (301) 631-6877

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 Alyssa Best's NPI number?

The NPI number for Alyssa Best is 1053984641. It was assigned to this individual provider in the NPPES registry on July 21, 2021.

Where is Alyssa Best located?

Alyssa Best practices at 180 Thomas Johnson Dr Ste 202, Frederick, MD 21702. The listed phone number is (301) 631-6877.

What is Alyssa Best's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.

Is Alyssa Best enrolled in Medicare?

Yes. Alyssa Best 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 Alyssa Best's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Alyssa Best reassigns Medicare benefits to 4 organizations: Cardiovascular Specialists Of Frederick, LLC (Frederick, MD), Carroll Family Medicine, LLC (Hampstead, MD), Privia Care Center LLC (Arlington, VA) and Privia Medical Group, LLC (Arlington, VA). 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 Alyssa Best's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Alyssa Best accept?

Health plans from Oscar Health list Alyssa Best as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Alyssa Best affiliated with any hospitals?

According to CMS data, Alyssa Best is affiliated with Frederick Health Hospital.

When was this NPI record last updated?

The NPPES record for Alyssa Best was last updated on October 8, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 days 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.