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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 MICHELLE BOSSO MD
NPI 1689202350
Internal Medicine - Rheumatology in Frederick, MD

Active since March 30, 2020PECOS Enrolled
161 THOMAS JOHNSON DR STE 250, FREDERICK, MD 21702(301) 942-7600(301) 694-0187 Get Directions Write a Review

NPPES record last updated: July 27, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Jul 27, 2026, Jun 26, 2025, Mar 30, 2020 (3 updates tracked since 2020).

About Alyssa Michelle Bosso Md NPPES

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

ALYSSA MICHELLE BOSSO MD (NPI 1689202350) is an individual rheumatology provider in Frederick, Maryland, licensed in Maryland (D0104194) and active in the NPI registry since March 2020. She is enrolled in Medicare PECOS and is a graduate of Georgetown University School Of Medicine (2020).

NPPES Registry Identity

NPI1689202350
Entity TypeIndividualFemale
Primary Taxonomy207RR0500X
Provider Legal NameALYSSA MICHELLE BOSSOCredential: MD
Location Address161 THOMAS JOHNSON DR STE 250Frederick, MD 21702-4958
Mailing Address7361 Calhoun Pl Ste 600Rockville, MD 20855-2788 · (301) 942-0442
Phone(301) 942-7600
Fax(301) 694-0187
Sole ProprietorNo
Medical School CMSGeorgetown University School Of MedicineGraduated 2020
Enumeration DateMarch 30, 2020
Last NPPES UpdateJuly 27, 20263 updates tracked since enumeration
NPPES CertifiedJuly 27, 2026
✔ NPI 1689202350 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · RheumatologyAllopathic & Osteopathic Physicians
Taxonomy Code207RR0500X
License✔ Licensed in MD · D0104194
Definition
An internist who treats diseases of joints, muscle, bones and tendons. This specialist diagnoses and treats arthritis, back pain, muscle strains, common athletic injuries and collagen diseases.
161 THOMAS JOHNSON DR STE 250, Frederick, MD 21702
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Alyssa Michelle Bosso Md 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 ID5799144655
PECOS Enrollment IDI20250803000101, I20250813001072
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.

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
$133.05 typical visit price
range $57.99 – $175.57
Typical copayment $33.26 (range $14.49 – $43.89)
Most-billed visit code 99204
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 5

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

KATHERINE ANN MAHER M.D.
Internal Medicine (Rheumatology)
161 THOMAS JOHNSON DR STE 250
FREDERICK, MD 21702
Frederick County (301) 942-7600
GRANT H. LOUIE M.D.
Internal Medicine (Rheumatology)
161 THOMAS JOHNSON DR STE 250
FREDERICK, MD 21702
Frederick County (301) 942-7600
ARTHRITIS & RHEUMATISM ASSOCIATES, P.C.
Non-Pharmacy Dispensing Site
161 THOMAS JOHNSON DR STE 250
FREDERICK, MD 21702
Frederick County (301) 942-7600
DR. LOUISA ZIGLAR MD
Internal Medicine (Rheumatology)
161 THOMAS JOHNSON DR STE 250
FREDERICK, MD 21702
Frederick County (301) 942-7600
ARTHRITIS AND RHEUMATISM ASSOCIATES
Durable Medical Equipment & Medical Supplies
161 THOMAS JOHNSON DR STE 250
FREDERICK, MD 21702
Frederick County (301) 942-7600

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 Bosso's NPI number?

The NPI number for Alyssa Bosso is 1689202350. It was assigned to this individual provider in the NPPES registry on March 30, 2020.

Where is Alyssa Bosso located?

Alyssa Bosso practices at 161 Thomas Johnson Dr Ste 250, Frederick, MD 21702. The listed phone number is (301) 942-7600.

What is Alyssa Bosso's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Rheumatology, with taxonomy code 207RR0500X.

Is Alyssa Bosso enrolled in Medicare?

Yes. Alyssa Bosso 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.

When was this NPI record last updated?

The NPPES record for Alyssa Bosso was last updated on July 27, 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.