PATRICIA LYNN WONG MD
NPI 1629138847
Dermatology in Palo Alto, CA
NPI Status: Active since December 11, 2006
Contact Information
735 COWPER STREET
PALO ALTO, CA
ZIP 94301
Phone: (650) 473-3173
Fax: (650) 473-2312
- Individual
- Female
- Dermatology
- Opted-Out Medicare
About PATRICIA WONG
This page provides the complete NPI Profile along with additional information for Patricia Wong, a provider established in Palo Alto, California with a medical specialization in Dermatology. The healthcare provider is registered in the NPI registry with number 1629138847 assigned on December 2006. The practitioner's primary taxonomy code is 207N00000X with license number G543820 (CA). The provider is registered as an individual and her NPI record was last updated one year ago.
- NPI
- 1629138847
- Provider Name
- PATRICIA LYNN WONG MD
- Gender
- Female
- Entity Type
- Individual
- Location Address
- 735 COWPER STREET PALO ALTO, CA 94301
- Location Phone
- (650) 473-3173
- Location Fax
- (650) 473-2312
- Mailing Address
- 735 COWPER STREET PALO ALTO, CA 94301
- Mailing Phone
- (650) 473-3173
- Mailing Fax
- (650) 473-2312
- Is Sole Proprietor?
- No
- Enumeration Date
- 12-11-2006
- Last Update Date
- 04-30-2025
- Code Navigator
A dermatologist like Patricia Wong is a medical specialty involving the management of skin conditions and diseases. Dermatologists diagnose some sexually transmitted diseases, warts, cancer, acne, dermatitis and may offer cosmetic treatments, and therapies that reduce age spots and wrinkles.
The provider doesn't accept Medicare and has signed an affidavit to be excluded from the Medicare program. If you are a Medicare beneficiary this means a provider can charge whatever they want for services rendered but must follow certain rules to do so. Patricia Wong opted out of Medicare effective on 09-16-2025 until 09-16-2027. Opt out periods last for two years and cannot be terminated unless the provider is opting out for the very first time and the affidavit is terminated no later than 90 days after the opt out effective date. Opt-out affidavits might renew automatically renew every two years. The provider opted out of Medicare and cannot order and refer services to other healthcare providers.
Location Map
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
Dermatology
- Taxonomy Code
- 207N00000X
- Type
- Allopathic & Osteopathic Physicians
- License No.
- G543820
- License State
- CA
- Taxonomy Description
- A dermatologist is trained to diagnose and treat pediatric and adult patients with benign and malignant disorders of the skin, mouth, external genitalia, hair and nails, as well as a number of sexually transmitted diseases. The dermatologist has had additional training and experience in the diagnosis and treatment of skin cancers, melanomas, moles and other tumors of the skin, the management of contact dermatitis and other allergic and nonallergic skin disorders, and in the recognition of the skin manifestations of systemic (including internal malignancy) and infectious diseases. Dermatologists have special training in dermatopathology and in the surgical techniques used in dermatology. They also have expertise in the management of cosmetic disorders of the skin such as hair loss and scars and the skin changes associated with aging.
Secondary Taxonomies
The provider has reported to the NPI enumerator additional taxonomy codes. Multiple taxonomy codes may represent subspecialties or other areas of specialization the provider maybe licensed to practice.
| No. | Taxonomy Code | Type | Classification / Specialization |
License No. (State) |
|---|---|---|---|---|
| 1 | 207R00000X | Allopathic & Osteopathic Physicians | Internal Medicine | G543820 (CA) |
Medicare Participation & PECOS Enrollment Status
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.
Opted-Out of Medicare? Yes
Opt-Out Effective Date: 09-16-2025
Opt-Out End Date: 09-16-2027
Eligible to Order and Refer? No
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NPI 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 1629138847, we treat the final digit (7) 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 73. The final step is to find the difference between that total and the next multiple of ten (80 - 73 = 7).
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.
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.
Step 2: Add all digits plus the NPI constant
Add the transformed values, the unchanged digits, and the constant 24.
Step 3: Find the amount needed to reach the next multiple of 10
The next multiple of ten after 73 is 80. The difference is the calculated check digit.
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1629138847, enumerated as an "individual" on December 11, 2006.
The provider is located at 735 COWPER STREET PALO ALTO, CA 94301 and the phone number is (650) 473-3173.
Dermatology with taxonomy code 207N00000X.
