DR. THOMAS J WALTMAN M.D.
NPI 1720004575
Internal Medicine in La Jolla, CA
NPI Status: Active since July 14, 2006
Contact Information
9500 GILMAN DR
MAIL CODE 0975
LA JOLLA, CA
ZIP 92093
Phone: (858) 657-8530
- Individual
- Male
- Internal Medicine
About THOMAS WALTMAN
This page provides the complete NPI Profile along with additional information for Thomas Waltman, an internist established in La Jolla, California with a medical specialization in Internal Medicine. The healthcare provider is registered in the NPI registry with number 1720004575 assigned on July 2006. The practitioner's primary taxonomy code is 207R00000X with license number G68146 (CA). The provider is registered as an individual and his NPI record was last updated one year ago.
- NPI
- 1720004575
- Provider Name
- DR. THOMAS J WALTMAN M.D.
- Gender
- Male
- Entity Type
- Individual
- Location Address
- 9500 GILMAN DR MAIL CODE 0975 LA JOLLA, CA 92093
- Location Phone
- (858) 657-8530
- Mailing Address
- 9500 GILMAN DR MAIL CODE 0975 LA JOLLA, CA 92093
- Mailing Phone
- (858) 657-8530
- Is Sole Proprietor?
- No
- Enumeration Date
- 07-14-2006
- Last Update Date
- 09-11-2025
- Code Navigator
An internist like Thomas Waltman is a physician who has completed an internal medicine residency and is board-certified or board-eligible in an internist specialty. Internists are trained to care for adults of all ages for many different medical conditions. An internist typically monitors chronic physical conditions, identifies acute diseases, provides family planning, provides counseling about wellness and disease prevention, etc.
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
Internal Medicine
- Taxonomy Code
- 207R00000X
- Type
- Allopathic & Osteopathic Physicians
- License No.
- G68146
- License State
- CA
- Taxonomy Description
- A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
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 | 207RC0000X | Allopathic & Osteopathic Physicians | Internal Medicine | G68146 (CA) |
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 |
|---|---|---|---|
| G68146 | MEDICAID (05) | CA |
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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 1720004575, we treat the final digit (5) 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 55. The final step is to find the difference between that total and the next multiple of ten (60 - 55 = 5).
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 55 is 60. The difference is the calculated check digit.
Other Providers at the Same Location
The following 20 providers are registered at the same or a nearby location.
LA JOLLA, CA 92093
LA JOLLA, CA 92093
LA JOLLA, CA 92093
LA JOLLA, CA 92093
LA JOLLA, CA 92093
LA JOLLA, CA 92093
LA JOLLA, CA 92093
LA JOLLA, CA 92093
LA JOLLA, CA 92093
LA JOLLA, CA 92093
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1720004575, enumerated as an "individual" on July 14, 2006.
The provider is located at 9500 GILMAN DR MAIL CODE 0975 LA JOLLA, CA 92093 and the phone number is (858) 657-8530.
Internal Medicine with taxonomy code 207R00000X.
The provider might be accepting Accepts: Medicare and Medicaid. Please consult your insurance carrier or call the provider to verify.
