DAVID ALLAN WILLIAMSON M.B., CH.B.
NPI 1215183512
Psychiatry & Neurology - Brain Injury Medicine in Houston, TX
NPI Status: Active since August 18, 2008
Contact Information
1 RIVERWAY STE 600
HOUSTON, TX
ZIP 77056
Phone: (713) 589-4122
- Individual
- Male
- Psychiatry & Neurology
- Brain Injury Medicine
- PECOS Enrolled
About DAVID WILLIAMSON
This page provides the complete NPI Profile along with additional information for David Williamson, a provider established in Houston, Texas with a medical specialization in Psychiatry & Neurology, focusing in brain injury medicine . The healthcare provider is registered in the NPI registry with number 1215183512 assigned on August 2008. The practitioner's primary taxonomy code is 2084P0301X with license number R0977 (TX). The provider is registered as an individual and his NPI record was last updated 3 years ago.
- NPI
- 1215183512
- Provider Name
- DAVID ALLAN WILLIAMSON M.B., CH.B.
- Gender
- Male
- Entity Type
- Individual
- Location Address
- 1 RIVERWAY STE 600 HOUSTON, TX 77056
- Location Phone
- (713) 589-4122
- Mailing Address
- 25511 HAVEN LAKE DR TOMBALL, TX 77375
- Mailing Phone
- (410) 463-0560
- Is Sole Proprietor?
- No
- Enumeration Date
- 08-18-2008
- Last Update Date
- 07-21-2022
- Code Navigator
Location Map
Secondary Locations
- Walter Reed National Military Ctr 8901 Rockville Pike
Bethesda, MD 20889
(301) 295-1928
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 Brain Injury Medicine
- Taxonomy Code
- 2084P0301X
- Type
- Allopathic & Osteopathic Physicians
- License No.
- R0977
- License State
- TX
- Taxonomy Description
- A Brain Injury Medicine physician specializes in disorders of brain function due to injury and disease. These disorders encompass a range of medical, physical, neurologic, cognitive, sensory, and behavioral disorders that result in psychosocial, educational, and vocational consequences.
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 | 2084B0040X | Allopathic & Osteopathic Physicians | Psychiatry & Neurology | R0977 (TX) |
| 2 | 2084B0040X | Allopathic & Osteopathic Physicians | Psychiatry & Neurology | D43756 (MD) |
| 3 | 2084P0301X | Allopathic & Osteopathic Physicians | Psychiatry & Neurology | D43756 (TX) |
Medicare Participation & PECOS Enrollment Status
David Williamson 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
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 DAVID ALLAN WILLIAMSON M.B., CH.B.
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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 | 2 | 1 | 5 | 1 | 8 | 3 | 5 | 1 | 2 |
| Step 1: Double the value of the alternate digits, beginning with the rightmost digit. | |||||||||
| 2 | 2 | 2 | 5 | 2 | 8 | 6 | 5 | 2 | |
| Step 2: Add all the doubled and unaffected individual digits from step 1 plus the constant number 24. | |||||||||
| 2 + 2 + 2 + 5 + 2 + 8 + 6 + 5 + 2 + 24 = 58 | |||||||||
| Step 3: Subtract the total obtained in step 2 from the next higher number ending in zero, the result is the check digit. | |||||||||
| 60 - 58 = 2 | 2 | ||||||||
The NPI number 1215183512 is valid because the calculated check digit 2 using the Luhn validation algorithm matches the last digit of the original NPI number.
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1215183512, enumerated in the NPI registry as an "individual" on August 18, 2008
The provider is located at 1 Riverway Ste 600 Houston, Tx 77056 and the phone number is (713) 589-4122
The provider's speciality is Psychiatry & Neurology with taxonomy code 2084P0301X with a focus in Brain Injury Medicine
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, Durable Medical Equipment (DME), a Home Health Agency (HHA) and Power Mobility Devices.
This NPI record was last updated on August 18, 2008. 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].
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