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STEPHEN PAUL YOON
NPI 1508327420
Ophthalmology in Baltimore, MD

Active since March 26, 2019PECOS EnrolledAccepts Medicare Assignment
22 S GREENE ST RM N3E09, BALTIMORE, MD 21201(410) 328-6110 Get Directions Write a Review

NPPES record last updated: September 17, 2024. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Sep 17, 2024, Sep 12, 2024 (2 updates tracked since 2024).

About Stephen Paul Yoon NPPES

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

STEPHEN PAUL YOON (NPI 1508327420) is an individual ophthalmology provider in Baltimore, Maryland, licensed in Maryland (D0099007) and active in the NPI registry since March 2019. He is enrolled in Medicare PECOS and is a graduate of Duke University School Of Medicine (2019).

NPPES Registry Identity

NPI1508327420
Entity TypeIndividualMale
Primary Taxonomy207W00000X
Provider Legal NameSTEPHEN PAUL YOON
Location Address22 S GREENE ST RM N3E09Baltimore, MD 21201-1544
Mailing Address22 S Greene St Rm N3e09Baltimore, MD 21201-1544
Phone(410) 328-6110
Sole ProprietorNo
Medical School CMSDuke University School Of MedicineGraduated 2019
Enumeration DateMarch 26, 2019
Last NPPES UpdateSeptember 17, 20242 updates tracked since enumeration
NPPES CertifiedSeptember 17, 2024
✔ NPI 1508327420 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOphthalmologyAllopathic & Osteopathic Physicians
Taxonomy Code207W00000X
License✔ Licensed in MD · D0099007
Definition
An ophthalmologist has the knowledge and professional skills needed to provide comprehensive eye and vision care. Ophthalmologists are medically trained to diagnose, monitor and medically or surgically treat all ocular and visual disorders. This includes problems affecting the eye and its component structures, the eyelids, the orbit and the visual pathways. In so doing, an ophthalmologist prescribes vision services, including glasses and contact lenses.
22 S GREENE ST RM N3E09, Baltimore, MD 21201
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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

Stephen Paul Yoon 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 ID42650988
PECOS Enrollment IDI20241009001291, I20241009001891, I20241017001929
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.

Areas of Expertise CMS Part B claims 3

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 problem focused exam of visual system 92012
This is a routine check-up for existing patients focusing on the visual system. It involves examining your eyes to detect any potential issues or changes in your vision. It's a crucial part of maintaining good eye health.
39 services39 patients
Imaging of optic nerve 92133
Imaging of the optic nerve is a non-invasive procedure that captures detailed pictures of your optic nerve. It helps doctors assess eye health, particularly for conditions like glaucoma. It's painless, quick, and uses safe technology like MRI or OCT (Optical Coherence Tomography).
12 services12 patients
Established patient complete exam of visual system 92014
An established patient complete exam of the visual system involves a thorough check of your eyes and vision. It assesses eye health, checks for diseases, and measures your ability to see clearly at different distances. It's a routine, non-invasive procedure.
11 services11 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 21201 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
$139.05 typical visit price
range $60.73 – $183.44
Typical copayment $34.76 (range $15.18 – $45.86)
Most-billed visit code 99204
Established Patient
$75.47 typical visit price
range $19.60 – $149.17
Typical copayment $18.86 (range $4.90 – $37.29)
Most-billed visit code 99213
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 20

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

DR. KATHERINE MICHAELA PANAGOS MD
Student in an Organized Health Care Education/Training Program
22 S GREENE ST RM N3E09
BALTIMORE, MD 21201
Baltimore City (410) 328-6110
NICHOLAS ANTHONY MUSACCHIO
Student in an Organized Health Care Education/Training Program
22 S GREENE ST RM N3E09
BALTIMORE, MD 21201
Baltimore City (410) 328-6110
RENUKA MEENU RAMCHANDRAN MD
Student in an Organized Health Care Education/Training Program
22 S GREENE ST RM N3E09
BALTIMORE, MD 21201
Baltimore City (410) 328-6110
ALEX PU MD
Student in an Organized Health Care Education/Training Program
22 S GREENE ST RM N3E09
BALTIMORE, MD 21201
Baltimore City (410) 328-6110
MEGAN BURIN
Student in an Organized Health Care Education/Training Program
22 S GREENE ST RM N3E09
BALTIMORE, MD 21201
Baltimore City (410) 328-6110
ROHAN SINGH MD
Student in an Organized Health Care Education/Training Program
22 S GREENE ST RM N3E09
BALTIMORE, MD 21201
Baltimore City (410) 328-6110
BRADLEY RYBINSKI
Student in an Organized Health Care Education/Training Program
22 S GREENE ST RM N3E09
BALTIMORE, MD 21201
Baltimore City (410) 328-6110
ETHAN KOTLOFF MD
Student in an Organized Health Care Education/Training Program
22 S GREENE ST RM N3E09
BALTIMORE, MD 21201
Baltimore City (410) 328-6110

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 Stephen Yoon's NPI number?

The NPI number for Stephen Yoon is 1508327420. It was assigned to this individual provider in the NPPES registry on March 26, 2019.

Where is Stephen Yoon located?

Stephen Yoon practices at 22 S Greene St Rm N3e09, Baltimore, MD 21201. The listed phone number is (410) 328-6110.

What is Stephen Yoon's specialty?

The primary specialty registered for this NPI is Ophthalmology with taxonomy code 207W00000X.

Is Stephen Yoon enrolled in Medicare?

Yes. Stephen Yoon 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 Stephen Yoon was last updated on September 17, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 22 months 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.