CYNTHIA L JOHNSTON M.D.
NPI 1831162239
Emergency Medicine in Marathon, FL

Q: What is Cynthia Johnston's NPI number?

The NPI number for Cynthia Johnston is 1831162239. It was assigned to this individual provider in the NPPES registry on February 8, 2006.

Q: What is Cynthia Johnston's specialty?

The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.

Q: When was this NPI record last updated?

The NPPES record for Cynthia Johnston was last updated on September 5, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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 February 08, 2006PECOS Enrolled

3301 OVERSEAS HWY, MARATHON, FL 33050(305) 743-5533(305) 289-0630 Get Directions Write a Review

NPPES record last updated: September 5, 2007. Verified against the NPPES registry weekly; last sync: October 25, 2026.

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About Cynthia L Johnston M.d. NPPES

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

CYNTHIA L JOHNSTON M.D. (NPI 1831162239) is an individual emergency medicine provider in Marathon, Florida, licensed in Florida (ME94206) and active in the NPI registry since February 2006. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1831162239

Entity TypeIndividualFemale

Primary Taxonomy207P00000X

Provider Legal NameCYNTHIA L JOHNSTONCredential: M.D.

Location Address3301 OVERSEAS HWYMarathon, FL 33050-2329

Mailing AddressPo Box 500369Marathon, FL 33050-0369 · (305) 304-0448

Phone(305) 743-5533

Fax(305) 289-0630

Sole ProprietorYes

Enumeration DateFebruary 8, 2006

Last NPPES UpdateSeptember 5, 2007

✔ NPI 1831162239 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyEmergency MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207P00000X

License✔ Licensed in FL · ME94206

Definition

An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury.

3301 OVERSEAS HWY, Marathon, FL 33050

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Other Identifiers 3

Medicare PIN31076AFL

Other31076FL · Bcbs

Medicare UPINE10011

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Cynthia L Johnston M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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 Cynthia Johnston reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Bruce L Boros MD PA

5.2 mi

Urgent Care

13365 OVERSEAS HWY STE 102
Marathon, FL 33050

Reassigned Medicare billing, Florida enrollment
28 clinicians in this Medicare group

NPI 1316578651 (305) 294-0011

Dwic Of Tampa Bay, Inc

110 mi

Urgent Care

13005 COLLIER BOULEVARD
Naples, FL 34116

Reassigned Medicare billing, Florida enrollment
96 clinicians in this Medicare group

NPI 1326583485 (239) 354-4093

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 33050 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

$96.13 typical visit price

range $60.92 – $187.05

Typical copayment $24.03 (range $15.23 – $46.76)

Most-billed visit code 99203

Established Patient

$107.17 typical visit price

range $18.99 – $150.24

Typical copayment $26.79 (range $4.74 – $37.56)

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 2

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Supply allowance for therapeutic continuous glucose monitor (cgm), includes all supplies and accessories, 1 month supply = 1 unit of service K0553

DME-Other DME · category DE017N

1 supplier369 claims1,479 services$213.28 avg. paid by Medicare

Receiver (monitor), dedicated, for use with therapeutic glucose continuous monitor system K0554

DME-Other DME · category DE017N

1 supplier36 claims36 services$214.80 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 20

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

PEETER JAKOBSON MD PA

Radiology (Diagnostic Radiology)

3301 OVERSEAS HWY, FISHERMEN'S HOSPITAL
MARATHON, FL 33050

Monroe County (334) 671-1696

MORPHEUS ANESTHESIA DOCS, LLC

Anesthesiology