WILLIAM D HOOKER PH.D.
NPI 1720199672
Clinical Neuropsychologist in San Francisco, CA
NPI Status: Active since August 31, 2006
Contact Information
350 PARNASSUS AVE
STE. 309
SAN FRANCISCO, CA
ZIP 94117
Phone: (415) 665-1875
Fax: (415) 665-1881
- Individual
- Male
- Clinical Neuropsychologist
- PECOS Enrolled
About WILLIAM HOOKER
This page provides the complete NPI Profile along with additional information for William Hooker, a provider established in San Francisco, California with a medical specialization in Clinical Neuropsychologist. The healthcare provider is registered in the NPI registry with number 1720199672 assigned on August 2006. The practitioner's primary taxonomy code is 103G00000X with license number PSY9092 (CA). The provider is registered as an individual and his NPI record was last updated 18 years ago.
- NPI
- 1720199672
- Provider Name
- WILLIAM D HOOKER PH.D.
- Gender
- Male
- Entity Type
- Individual
- Location Address
- 350 PARNASSUS AVE STE. 309 SAN FRANCISCO, CA 94117
- Location Phone
- (415) 665-1875
- Location Fax
- (415) 665-1881
- Mailing Address
- 350 PARNASSUS AVE STE. 309 SAN FRANCISCO, CA 94117
- Mailing Phone
- (415) 665-1875
- Mailing Fax
- (415) 665-1881
- Is Sole Proprietor?
- Yes
- Enumeration Date
- 08-31-2006
- Last Update Date
- 07-08-2007
- Code Navigator
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
Clinical Neuropsychologist
- Taxonomy Code
- 103G00000X
- Type
- Behavioral Health & Social Service Providers
- License No.
- PSY9092
- License State
- CA
- Taxonomy Description
- A clinical psychologist who applies principles of assessment and intervention based upon the scientific study of human behavior as it relates to normal and abnormal functioning of the central nervous system. The specialty is dedicated to enhancing the understanding of brain-behavior relationships and the application of such knowledge to human problems.
Insurance Plans Accepted
According to publicly available information the provider might be accepting the following health plans from these health insurance companies:
Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.
Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.
*Please verify directly with this provider to make sure your insurance plan is currently accepted.
Additional Identifiers
The NPI Enumerator encourages providers to submit additional identifiers with their NPI application although the submission of this information is optional. The additional identifier(s) section includes other numbers or codes currently or formerly used as an identifier for the provider by other public healthcare entities. The identifiers may include UPIN, NSC, OSCAR, DEA, Medicaid State or PIN identification numbers.
| Identifier | Type / Code | Identifier State | Identifier Issuer |
|---|---|---|---|
| OOPL90920 | MEDICARE ID-TYPE UNSPECIFIED (04) | CA | |
| R26697 | MEDICARE UPIN (02) | CA |
Medicare Participation & PECOS Enrollment Status
William Hooker 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 and Durable Medical Equipment (DME).
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
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): No
Eligible to Order or Refer Power Mobility Devices: No
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NPI Validation Check Digit Calculation
The following table explains the step by step NPI number validation process using the ISO standard Luhn algorithm.
| Start with the original NPI number, the last digit is the check digit and is not used in the calculation. | |||||||||
| 1 | 7 | 2 | 0 | 1 | 9 | 9 | 6 | 7 | 2 |
| Step 1: Double the value of the alternate digits, beginning with the rightmost digit. | |||||||||
| 2 | 7 | 4 | 0 | 2 | 9 | 18 | 6 | 14 | |
| Step 2: Add all the doubled and unaffected individual digits from step 1 plus the constant number 24. | |||||||||
| 2 + 7 + 4 + 0 + 2 + 9 + 1 + 8 + 6 + 1 + 4 + 24 = 68 | |||||||||
| Step 3: Subtract the total obtained in step 2 from the next higher number ending in zero, the result is the check digit. | |||||||||
| 70 - 68 = 2 | 2 | ||||||||
The NPI number 1720199672 is valid because the calculated check digit 2 using the Luhn validation algorithm matches the last digit of the original NPI number.
Other Providers at the Same Location
The following 20 providers are registered at the same or nearby location.
| NPI | Name / Type | Taxonomy | Address |
|---|---|---|---|
| 1477505881 | DR. JAMES W. OSTROFF MD Individual | Internal Medicine (Gastroenterology) | 350 PARNASSUS AVE SUITE 410 SAN FRANCISCO, CA 94117 (415) 502-2112 |
| 1629007091 | DR. MARY E. NORTON M.D. Individual | Obstetrics & Gynecology | 350 PARNASSUS AVE SAN FRANCISCO, CA 94117 (415) 476-4080 |
| 1467482000 | DR. ETHAN J. WEISS M.D. Individual | Internal Medicine | 350 PARNASSUS AVE SAN FRANCISCO, CA 94117 (415) 476-5405 |
| 1184640872 | HARVEY DAVID WATTS M.D. Individual | Internal Medicine (Gastroenterology) | 350 PARNASSUS AVE SUITE 900 SAN FRANCISCO, CA 94117 (415) 759-2121 |
| 1477575744 | DR. ALLAN SYKES TREADWELL M.D. Individual | Internal Medicine | 350 PARNASSUS AVE SUITE 710 SAN FRANCISCO, CA 94117 (415) 476-2752 |
| 1932219094 | DR. BRUCE MILLER M.D. Individual | Psychiatry & Neurology (Neurology) | 350 PARNASSUS AVE SUITE 706 SAN FRANCISCO, CA 94117 (415) 476-6242 |
| 1134210362 | DR. ERIC CHRISTOPHER BUXTON M.D. Individual | Internal Medicine (Endocrinology, Diabetes & Metabolism) | 350 PARNASSUS AVE SUITE 707 SAN FRANCISCO, CA 94117 (415) 681-7707 |
| 1972696250 | DR. NATHAN BECKER M.D. Individual | Internal Medicine (Endocrinology, Diabetes & Metabolism) | 350 PARNASSUS AVE SUITE 707 SAN FRANCISCO, CA 94117 (415) 681-7707 |
| 1487715983 | DR. JOEL H KRAMER PSY.D. Individual | Clinical Neuropsychologist | 350 PARNASSUS AVE SUITE 706 SAN FRANCISCO, CA 94117 (415) 476-7561 |
| 1972654093 | DR. THOMAS BARNETT LEWIS M.D. Individual | Psychiatry & Neurology (Psychiatry) | 350 PARNASSUS AVE SUITE 909 SAN FRANCISCO, CA 94117 (415) 664-6929 |
| 1578614350 | JOSH GIBSON M.D. Individual | Psychiatry & Neurology (Psychiatry) | 350 PARNASSUS AVE SUITE 909 SAN FRANCISCO, CA 94117 (415) 564-8500 |
| 1265568505 | DR. KRZYSZTOF IZDEBSKI PHD Individual | Speech-Language Pathologist | 350 PARNASSUS AVE SUITE 501 SAN FRANCISCO, CA 94117 (415) 564-4700 |
| 1134253792 | DR. JOHN BENJAMIN SIKORSKI MD Individual | Psychiatry & Neurology (Psychiatry) | 350 PARNASSUS AVE SUITE 309 SAN FRANCISCO, CA 94117 (415) 661-7570 |
| 1023130747 | DR. GREGORY A. CHONG D.D.S. Individual | Dentist (General Practice) | 350 PARNASSUS AVE SUITE #403 SAN FRANCISCO, CA 94117 (415) 681-0668 |
| 1609093392 | TERESA L. MCGUINNESS M.D. Individual | Psychiatry & Neurology (Psychiatry) | 350 PARNASSUS AVE SUITE 303 SAN FRANCISCO, CA 94117 (415) 681-3408 |
| 1114145711 | DR. RICHARD ANDREW LANNON M.D. Individual | Psychiatry & Neurology (Psychiatry) | 350 PARNASSUS AVE SUITE 909 SAN FRANCISCO, CA 94117 (415) 563-6366 |
| 1386856938 | DR. KATHERINE AKHTAR STRAZNICKAS PH.D. Individual | Psychologist | 350 PARNASSUS AVE SUITE 309 SAN FRANCISCO, CA 94117 (415) 665-9234 |
| 1780881045 | KAREN CHRISTINE BAGATELOS M.S.N.,N.P. Individual | Nurse Practitioner | 350 PARNASSUS AVE SUITE 410 SAN FRANCISCO, CA 94117 (415) 502-2211 |
| 1699959007 | NATHAN BECKER M.D., INC. Organization | Specialist | 350 PARNASSUS AVE SUITE 707 SAN FRANCISCO, CA 94117 (415) 681-7707 |
| 1245490481 | SARAH TOBIAS RUSSELL M.S. Individual | Genetic Counselor, MS | 350 PARNASSUS AVE SUITE 810 SAN FRANCISCO, CA 94117 (415) 353-4071 |
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1720199672, enumerated in the NPI registry as an "individual" on August 31, 2006
The provider is located at 350 Parnassus Ave Ste. 309 San Francisco, Ca 94117 and the phone number is (415) 665-1875
The provider's speciality is Clinical Neuropsychologist with taxonomy code 103G00000X
The provider might be accepting Accepts: Medicare and Medicaid. Please consult your insurance carrier or call the provider to make sure your health plan is currently accepted.
Yes, as of June 20, 2025 the provider is registered in PECOS and is eligible to order health care services or supplies for Medicare patients. If you are a beneficiary the provider is eligible to order or refer: Part B Clinical Laboratory and Imaging and Durable Medical Equipment (DME).
This NPI record was last updated on August 31, 2006. To officially update your NPI information contact the National Plan and Provider Enumeration System (NPPES) at 1-800-465-3203 (NPI Toll-Free) or by email at [email protected].
NPI Profile data is regularly updated with the latest NPI registry information, if you would like to update or remove your NPI Profile in this website please contact us.