DR. SOPHIA YOUN DO
NPI 1104493246
Psychiatry & Neurology - Child & Adolescent Psychiatry in Philadelphia, PA

NPI Status: Active since June 08, 2021

Contact Information

33 S 9TH ST STE 210
PHILADELPHIA, PA
ZIP 19107
Phone: (703) 403-8708

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NPPES record last updated: April 19, 2026. Verified against the NPPES registry weekly; last sync: July 19, 2026.

Record update history: Apr 19, 2026, Jun 8, 2021 (2 updates tracked since 2021).

  • Individual
  • Female
  • Years of Experience 6
  • Psychiatry & Neurology
  • Child & Adolescent Psychiatry
  • May Accept Medicare Approved Payment
  • PECOS Enrolled

About SOPHIA YOUN

This page provides the complete NPI Profile along with additional information for Sophia Youn, a provider established in Philadelphia, Pennsylvania with a medical specialization in Psychiatry & Neurology, focusing in child & adolescent psychiatry and more than 6 years of experience. She graduated from Touro Un Col Of Osteopathic Medicine, New York in 2021. The healthcare provider is registered in the NPI registry with number 1104493246 assigned on June 2021. The practitioner's primary taxonomy code is 2084P0804X with license number OS025416 (PA). The provider is registered as an individual and her NPI record was last updated April 2026.

NPI
1104493246
Provider Name
DR. SOPHIA YOUN DO
Gender
Female
Entity Type
Individual
Location Address
33 S 9TH ST STE 210 PHILADELPHIA, PA 19107
Location Phone
(703) 403-8708
Mailing Address
833 CHESTNUT ST STE 210 PHILADELPHIA, PA 19107
Medical School Name
TOURO UN COL OF OSTEOPATHIC MEDICINE, NEW YORK
Graduation Year
2021
Is Sole Proprietor?
Yes
Enumeration Date
06-08-2021
Last Update Date
04-19-2026
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Specialty - Primary Taxonomy

The NPI enumerator requires providers to submit at least one taxonomy code. A taxonomy code is a unique 10-character code that describes the healthcare provider type, classification, and the area of specialization. There could be only one primary taxonomy code per NPI record. For individual NPIs the license data is associated to the taxonomy code.

Classification

Psychiatry & Neurology Child & Adolescent Psychiatry

Taxonomy Code
2084P0804X
Type
Allopathic & Osteopathic Physicians
License No.
OS025416
License State
PA
Taxonomy Description
Child & Adolescent Psychiatry is a subspecialty of psychiatry with additional skills and training in the diagnosis and treatment of developmental, behavioral, emotional, and mental disorders of childhood and adolescence.

Medicare Participation & PECOS Enrollment Status

Sophia Youn is registered with Medicare but may not accept claims assignment. If you are a Medicare beneficiary call and confirm with the provider before seeking any services.

Sophia Youn is enrolled in PECOS and is eligible to order or refer health care services for Medicare patients. The provider is eligible to order or refer: Part B Clinical Laboratory and Imaging, Durable Medical Equipment (DME), a Home Health Agency (HHA) and Power Mobility Devices.

What is PECOS?
PECOS is the online Medicare enrollment management system or Provider, Enrollment, Chain and Ownership System. The PECOS system is a database of providers who have registered with CMS as providers or suppliers. PECOS is the primary source of information about verified Medicare professionals. Providers that want to participate in this program need to enroll in PECOS with their NPI number to avoid denied claims.

  • Is the provider registered in PECOS? Yes

  • PECOS PAC ID: 7911415781

    What is the PECOS Associate Control ID?
    A PAC ID is a unique 10-digit number assigned to an individual or organization healthcare provider in PECOS. The PAC ID is used to link together all the provider information, like tax identification numbers and organizational names. A PAC ID can be connected to multiple Enrollment IDs if an individual or organization has enrolled in PECOS more than once.

  • PECOS Enrollment ID: I20260501000622

    What is the Provider Enrollment ID?
    The Enrollment ID is a unique alphanumeric 15-digit code assigned to each new provider's PECOS enrollment application. The Enrollment ID is used to link together all the provider enrollment information like enrollment type, state, provider specialty, and reassignment of benefits.

  • Accepts Medicare Assignment? Maybe

    What does it mean "accepts medicare assignment"?
    When a provider accepts Medicare assignment, the provider agrees to be paid directly by Medicare and to accept the payment amount approved by Medicare. Additionally, the provider agrees to not bill patients for more than the Medicare deductible and coinsurance amounts.
    A provider who doesn't accept assignment may charge you up to 15% over the Medicare-approved amount. This is known as the limiting charge. You may have to pay this amount, or it may be covered by another insurer.

  • Eligible to Order or Refer Part B Clinical Laboratory and Imaging: Yes

  • Eligible to Order or Refer Durable Medical Equipment (DMEPOS): Yes

  • Eligible to Order or Refer a Home Health Agency (HHA): Yes

  • Eligible to Order or Refer Power Mobility Devices: Yes

Reviews for DR. SOPHIA YOUN DO

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NPI Number Validation

How NPI Validation Works

The NPI validation process uses the ISO-standard Luhn algorithm, a mathematical "handshake", to ensure that a provider's 10-digit ID is authentic and free of common typing errors.

To verify the NPI 1104493246, we treat the final digit (6) as the Check Digit—the target answer we need to reach. The process begins by taking the first nine digits and adding a constant value of 24, which accounts for the "80840" prefix required for all U.S. health identifiers. We then double every other digit starting from the right and sum the individual digits of those results together. For this specific NPI, that total comes to 64. The final step is to find the difference between that total and the next multiple of ten (70 - 64 = 6).

Digit-by-digit view

Use the first nine digits for the calculation. Starting from the right, double every other digit. The last digit is the check digit and is not part of the calculation.

Pos 1
1
Doubled → 2
Pos 2
1
Unchanged
Pos 3
0
Doubled → 0
Pos 4
4
Unchanged
Pos 5
4
Doubled → 8
Pos 6
9
Unchanged
Pos 7
3
Doubled → 6
Pos 8
2
Unchanged
Pos 9
4
Doubled → 8
Check
6
Target digit
Regular digit Doubled digit Check digit

Step 1: Double every other digit from the right

Starting with the rightmost digit of the first nine digits, double every other value. If doubling creates a two-digit number, add those digits together.

1 → 2 0 → 0 4 → 8 3 → 6 4 → 8

Step 2: Add all digits plus the NPI constant

Add the transformed values, the unchanged digits, and the constant 24.

2 + 1 + 0 + 4 + 8 + 9 + 6 + 2 + 8 + 24 = 64

Step 3: Find the amount needed to reach the next multiple of 10

The next multiple of ten after 64 is 70. The difference is the calculated check digit.

70 - 64 = 6
This NPI is valid
The calculated check digit is 6, which matches the last digit of 1104493246.

Other Providers at the Same Location


The following 1 provider is registered at the same or a nearby location.

Nurse Practitioner (Psychiatric/Mental Health)
33 S 9TH ST STE 210
PHILADELPHIA, PA 19107

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1104493246, enumerated as an "individual" on June 08, 2021.

The provider is located at 33 S 9TH ST STE 210 PHILADELPHIA, PA 19107 and the phone number is (703) 403-8708.

Psychiatry & Neurology with taxonomy code 2084P0804X and a focus in Child & Adolescent Psychiatry.