ISAAC S. YOON M.D.
NPI 1417913310
Family Medicine in Lutherville, MD

Q: What is Isaac Yoon's NPI number?

The NPI number for Isaac Yoon is 1417913310. It was assigned to this individual provider in the NPPES registry on April 21, 2006.

Q: What is Isaac Yoon's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Q: When was this NPI record last updated?

The NPPES record for Isaac Yoon was last updated on December 7, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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 April 21, 2006PECOS EnrolledAccepts Medicare Assignment

61.68/100

CMS Quality Rating

10755 FALLS RD, SUITE 160, LUTHERVILLE, MD 21093(410) 583-2777 Get Directions Write a Review

NPPES record last updated: December 7, 2023. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Dec 7, 2023, Mar 23, 2018 (2 updates tracked since 2018).

On this page

About Isaac S. Yoon M.d. NPPES

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

ISAAC S. YOON M.D. (NPI 1417913310) is an individual family medicine provider in Lutherville, Maryland, licensed in Maryland (D0046786) and active in the NPI registry since April 2006. He is enrolled in Medicare PECOS and is a graduate of Tulane University School Of Medicine (1989).

NPPES Registry Identity

NPI1417913310

Entity TypeIndividualMale

Primary Taxonomy207Q00000X

Provider Legal NameISAAC S. YOONCredential: M.D.

Location Address10755 FALLS RD, SUITE 160Lutherville, MD 21093-4515

Mailing Address5000 Cox RdGlen Allen, VA 23060-9263 · (804) 968-5700

Phone(410) 583-2777

Sole ProprietorNo

Medical School CMSTulane University School Of MedicineGraduated 1989

Enumeration DateApril 21, 2006

Last NPPES UpdateDecember 7, 20232 updates tracked since enumeration

NPPES CertifiedDecember 7, 2023

✔ NPI 1417913310 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207Q00000X

Licenses✔ Licensed in MD · D0046786✔ Licensed in NJ · 25MA09476900✔ Licensed in VA · 0101221491✔ Licensed in PA · MD441907

Definition

Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.

10755 FALLS RD, Lutherville, MD 21093

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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

Isaac S. Yoon M.d. 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 ID5799679080

PECOS Enrollment IDI20090513000062, I20110218000519, I20131211001730

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 Isaac Yoon reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Patient First Maryland Medical Group PLLC

35 mi

Family Medicine

8206 GEORGIA AVE
Silver Spring, MD 20910

Reassigned Medicare billing, District of Columbia and Maryland enrollments
Also billed through NPI 1205087517 (Maryland)
184 clinicians in this Medicare group

NPI 1265866503 (301) 960-4682

Patient First Pennsylvania Medical Group PLLC

95 mi

Family Medicine

713 BETHLEHEM PIKE
Montgomeryville, PA 18936

Reassigned Medicare billing, Pennsylvania enrollment
105 clinicians in this Medicare group

NPI 1568712677 (804) 968-5700

Patient First Maryland Physician's Group PC

130 mi

Family Medicine

5000 COX RD, SUITE 100
Glen Allen, VA 23060

Reassigned Medicare billing, New Jersey enrollment
Medicare enrollment name: Patient First Maryland Physicians Group, P.C..
42 clinicians in this Medicare group

NPI 1982733564 (804) 968-5700

Patient First New Jersey Physicians Group LLC

130 mi

Urgent Care

5000 COX RD
Glen Allen, VA 23060

Reassigned Medicare billing, New Jersey enrollment
37 clinicians in this Medicare group

NPI 1285317750 (807) 968-5700

Patient First Richmond Medical Group PLLC

130 mi

Family Medicine

5000 COX RD, SUITE 100
Glen Allen, VA 23060

Reassigned Medicare billing, District of Columbia and Virginia enrollments
263 clinicians in this Medicare group

NPI 1689603748 (804) 822-4355

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 38

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.

X-ray of chest, 2 views 71046

A chest X-ray, 2 views, is a quick, painless test that creates pictures of the structures inside your chest, such as your heart, lungs, and blood vessels. Two different angles are used to get a comprehensive view. This helps in diagnosing conditions like pneumonia, heart problems, or lung cancer.

950 services870 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.

155 services155 patients

X-ray of knee, 4 or more views 73564

An X-ray of the knee, 4 or more views, is a non-invasive imaging test. It involves capturing multiple images of your knee from different angles. This helps in diagnosing conditions such as fractures, arthritis, or infections. The procedure is quick and painless.

128 services116 patients

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.

119 services109 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.

107 services96 patients

X-ray of foot, minimum of 3 views 73630

An X-ray of the foot, minimum of 3 views, is a non-invasive imaging test. It uses a small amount of radiation to produce images of the bones and tissues in your foot. This helps to identify fractures, infections, or other abnormalities. Multiple views ensure a comprehensive examination.

99 services95 patients

Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count 85025

A Complete Blood Cell Count is a common test that measures various components of the blood, including red cells (carry oxygen), white cells (fight infection), and platelets (help blood clot). An automated test ensures accuracy. The differential count provides detailed information about white cell types.

94 services88 patients

X-ray of ribs on side of body, minimum of 3 views 71101

This is a diagnostic procedure where a machine emits a small amount of radiation to capture images of your ribs from at least three different angles. It helps to identify issues like fractures or infections. It's a quick, painless process.

83 services83 patients

Blood test, basic group of blood chemicals (calcium, ionized) 80047

A basic group of blood chemicals test, including calcium and ionized, is a simple procedure where a small amount of blood is drawn from your arm. This test helps assess your body's overall health and detect potential disorders like kidney disease or bone disease.

81 services74 patients

X-ray of ankle, minimum of 3 views 73610

An ankle X-ray is a quick, painless imaging test. It involves capturing at least three different images or 'views' of your ankle using small amounts of radiation. These images help identify any abnormalities or injuries, such as fractures or arthritis.

74 services72 patients

X-ray of lower and sacral spine, minimum of 4 views 72110

An X-ray of the lower and sacral spine involves capturing images of your lower back and tailbone area. It helps in identifying issues like fractures, arthritis, or other abnormalities. At least four different angles or 'views' are taken to get a comprehensive picture.

69 services69 patients

X-ray of shoulder, minimum of 2 views 73030

An X-ray of the shoulder, with a minimum of 2 views, is a non-invasive imaging test. It uses a small amount of radiation to produce images of your shoulder bones. This helps in diagnosing conditions like fractures, arthritis, or other abnormalities. The procedure is quick and painless.

69 services67 patients

New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203

This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.

68 services68 patients

X-ray of hand, minimum of 3 views 73130

An X-ray of the hand, minimum of 3 views, is a non-invasive imaging test. It uses a small amount of radiation to produce images of the bones in your hand from different angles. This helps in diagnosing fractures, infections, arthritis, or other abnormalities. It's quick and painless.

59 services58 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.

57 services57 patients

X-ray of wrist, minimum of 3 views 73110

An X-ray of the wrist, minimum of 3 views, is a diagnostic procedure that uses radiation to create images of your wrist from different angles. This helps detect fractures, infections, or other abnormalities for accurate diagnosis and treatment planning.

56 services56 patients

X-ray of hip, 2-3 views 73502

An X-ray of the hip with 2-3 views is a non-invasive imaging test. It uses a small amount of radiation to produce pictures of the hip joint. These images help in diagnosing conditions like fractures, arthritis, or other abnormalities. The process is quick and painless.

56 services56 patients

Detection test by immunoassay technique for severe acute respiratory syndrome coronavirus 87426

An immunoassay test for severe acute respiratory syndrome coronavirus is a diagnostic tool. It uses your body's immune response to detect the presence of the virus. It involves taking a sample, usually from your nose or throat, which is then analyzed in a lab for signs of the virus.

52 services51 patients

Detection test by immunoassay with direct visual observation for streptococcus, group a (strep) 87880

A detection test by immunoassay for Group A Strep is a quick procedure to identify a bacterial infection in your throat. It involves taking a throat swab and applying it to a test strip, which changes color if Strep bacteria are present.

51 services50 patients

Influenza vaccine split virus, preservative free 90662

The Influenza Vaccine Split Virus, preservative-free, is a flu shot to protect against the influenza virus. It is made from parts of inactivated flu viruses and doesn't contain preservatives, reducing potential side effects. It helps your body develop immunity to the flu.

49 services49 patients

X-ray of upper spine, 4-5 views 72050

An X-ray of the upper spine with 4-5 views is a non-invasive imaging test. It uses radiation to capture detailed images of the bones and structures in your neck and upper back. This procedure helps identify issues like fractures, infections, or deformities.

44 services44 patients

X-ray series of abdomen with single x-ray of chest 74022

An X-ray series of the abdomen and a single X-ray of the chest are imaging tests. They help doctors view the structures within your abdomen and chest. These tests can detect issues like blockages, infections, or tumors. You'll be positioned carefully, and the machine captures images.

43 services43 patients

X-ray of toe, minimum of 2 views 73660

An X-ray of the toe with a minimum of 2 views involves capturing images of your toe from different angles. This test helps identify any abnormalities or injuries such as fractures or infections. It's a quick, painless procedure that provides valuable information about your toe's health.

38 services38 patients

Manual urinalysis test with examination using microscope, non-automated 81000

A manual urinalysis test involves studying a urine sample under a microscope. This non-automated method helps identify any abnormal substances present. It's a useful tool for detecting potential health concerns early. The process is simple and non-invasive.

38 services38 patients

X-ray of finger, minimum of 2 views 73140

An X-ray of the finger involves capturing images of your finger from at least two different angles. This non-invasive procedure helps in visualizing the bones and joints, aiding in the diagnosis of fractures, infections, or other abnormalities. Minimal discomfort may be experienced.

36 services35 patients

Detection test by immunoassay technique for severe acute respiratory syndrome coronavirus and influenza 87428

This test uses a method called immunoassay to identify severe acute respiratory syndrome coronavirus and influenza. It works by detecting specific proteins (antigens) in a sample, like a nasal swab. It's a powerful tool in diagnosing these viral infections.

35 services35 patients

X-ray of elbow, minimum of 3 views 73080

An elbow X-ray with a minimum of 3 views is a non-invasive imaging test. It helps visualize the bones of the elbow from different angles. This aids in diagnosing conditions like fractures or arthritis. The procedure is quick, painless, and usually takes around 15 minutes.

34 services33 patients

Urinalysis, manual test 81002

A urinalysis is a simple, non-invasive test that checks the urine for various elements such as sugar, protein, and signs of infection. It can help detect many common conditions, including kidney disease and diabetes. The manual test involves a lab technician examining a urine sample.

33 services33 patients

Detection test by immunoassay with direct visual observation for influenza virus 87804

This is a test that identifies the influenza virus in your body. It works by using an immunoassay, a method that detects the presence of the virus through an immune response. The results are directly observable, making it a quick and efficient way to diagnose flu.

30 services15 patients

Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more 99212

This is a routine check-up for patients who have previously seen the doctor. During this 10-19 minute visit, the doctor will review your health status, discuss any concerns, and manage ongoing treatments or medications. It's a chance to ensure your health is on track.

29 services28 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.

27 services27 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

26 services26 patients

X-ray of lower leg, 2 views 73590

An X-ray of the lower leg, 2 views, is a quick, painless test that produces images of the bones in your lower leg. It helps to identify fractures, infections, or diseases. Two different angles are used to provide a comprehensive view of the leg's structure.

24 services24 patients

X-ray of nose bones, minimum of 3 views 70160

An X-ray of nose bones, with a minimum of 3 views, is a non-invasive imaging test. It uses a small amount of radiation to produce images of the bones in your nose from different angles. This helps in diagnosing fractures or other abnormalities. It's a quick and painless procedure.

13 services13 patients

X-ray of forearm, 2 views 73090

An X-ray of the forearm, 2 views, is a diagnostic procedure where two different pictures of your forearm are taken using a small amount of radiation. These images help doctors assess your bone health and identify any fractures, infections, or other abnormalities.

13 services13 patients

X-ray of thigh bone, minimum 2 views 73552

An X-ray of the thigh bone is a non-invasive imaging test. It involves passing a small amount of radiation through the thigh to produce images of the bone structure. At least two different angles are captured for a comprehensive view. This helps detect fractures, infections, or other abnormalities.

13 services13 patients

X-ray of face bones, minimum of 3 views 70150

An X-ray of face bones, minimum of 3 views, is a diagnostic procedure where images of your facial bones are taken from at least three different angles. This helps in detecting fractures, infections, or other abnormalities in the facial region. It's a quick, painless process.

11 services11 patients

X-ray of abdomen, 1 view 74018

An X-ray of the abdomen, 1 view, is a quick and painless imaging test. It uses a small amount of radiation to produce images of the structures in your abdomen, such as the stomach, liver, and intestines. This can help identify issues like blockages, infections, or injuries.

11 services11 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 21093 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

$94.08 typical visit price

range $60.73 – $183.44

Typical copayment $23.52 (range $15.18 – $45.86)

Most-billed visit code 99203

Established Patient

$106.59 typical visit price

range $19.60 – $149.17

Typical copayment $26.64 (range $4.90 – $37.29)

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.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

61.68/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Scored as part of a group practice

Quality

82.98

Promoting Interoperability

Improvement Activities

Cost

72.62

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.

MARIE DOMINIQUE ASHEN C.R.N.P.

Nurse Practitioner

10755 FALLS RD, PAVILION 1 SUITE 360
LUTHERVILLE TIMONIUM, MD 21093

Baltimore County (410) 583-2740

MRS. JOANNE ELIZABETH DESMOND CRNP

Nurse Practitioner (Pediatrics)

10755 FALLS RD, SUITE 260
LUTHERVILLE, MD 21093

Baltimore County (410) 583-2955

DONALD SCHLOTT M.D.

Internal Medicine

10755 FALLS RD
LUTHERVILLE, MD 21093

Baltimore County (410) 583-2727

HOWARD ZACUR M.D.

Obstetrics & Gynecology

10755 FALLS RD
LUTHERVILLE, MD 21093

Baltimore County (410) 583-2888

EDWARD WALLACH M.D.

Obstetrics & Gynecology

10755 FALLS RD
LUTHERVILLE, MD 21093

Baltimore County (410) 583-2888

PAUL G AUWAERTER M.D.

Internal Medicine (Infectious Disease)

10755 FALLS RD
LUTHERVILLE, MD 21093

Baltimore County (410) 583-2727

DIANE CLAIRE PRESSMAN M.D.

Internal Medicine

10755 FALLS RD, SUITE 200
LUTHERVILLE, MD 21093

Baltimore County (410) 583-7114

DAVID GUYTON M.D.

Ophthalmology

10755 FALLS RD
LUTHERVILLE, MD 21093

Baltimore County (410) 583-2800

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 Isaac Yoon's NPI number?

The NPI number for Isaac Yoon is 1417913310. It was assigned to this individual provider in the NPPES registry on April 21, 2006.

Where is Isaac Yoon located?

Isaac Yoon practices at 10755 Falls Rd Suite 160, Lutherville, MD 21093. The listed phone number is (410) 583-2777.

What is Isaac Yoon's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Is Isaac Yoon enrolled in Medicare?

Yes. Isaac 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.

Which organizations bill Medicare for Isaac Yoon's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Isaac Yoon reassigns Medicare benefits to 5 organizations: Patient First Maryland Medical Group PLLC (Silver Spring, MD), Patient First Pennsylvania Medical Group PLLC (Montgomeryville, PA), Patient First Maryland Physician's Group PC (Glen Allen, VA), Patient First New Jersey Physicians Group LLC (Glen Allen, VA) and Patient First Richmond Medical Group PLLC (Glen Allen, 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 Isaac Yoon's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Isaac Yoon was last updated on December 7, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.