DR. KAREN LOUISE HERBST PH.D., M.D.
NPI 1114977840
Internal Medicine - Endocrinology, Diabetes & Metabolism in Tucson, AZ
NPI Status: Active since May 11, 2006
Contact Information
6365 E TANQUE VERDE RD STE 200
TUCSON, AZ
ZIP 85715
Phone: (520) 719-1610
Fax: (520) 720-3904
- Individual
- Female
- Internal Medicine
- Endocrinology, Diabetes & Metabolism
- Opted-Out Medicare
About KAREN HERBST
This page provides the complete NPI Profile along with additional information for Karen Herbst, an internist established in Tucson, Arizona with a medical specialization in Internal Medicine, focusing in endocrinology, diabetes & metabolism . The healthcare provider is registered in the NPI registry with number 1114977840 assigned on May 2006. The practitioner's primary taxonomy code is 207RE0101X with license number A80165 (CA). The provider is registered as an individual and her NPI record was last updated one year ago.
- NPI
- 1114977840
- Provider Name
- DR. KAREN LOUISE HERBST PH.D., M.D.
- Gender
- Female
- Entity Type
- Individual
- Location Address
- 6365 E TANQUE VERDE RD STE 200 TUCSON, AZ 85715
- Location Phone
- (520) 719-1610
- Location Fax
- (520) 720-3904
- Mailing Address
- 6365 E TANQUE VERDE RD STE 200 TUCSON, AZ 85715
- Mailing Phone
- (520) 719-1610
- Mailing Fax
- (520) 720-3904
- Is Sole Proprietor?
- No
- Enumeration Date
- 05-11-2006
- Last Update Date
- 08-25-2025
- Code Navigator
An internist like Karen Herbst 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.
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. Karen Herbst opted out of Medicare effective on 03-21-2022 until 03-21-2026. 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
Internal Medicine Endocrinology, Diabetes & Metabolism
- Taxonomy Code
- 207RE0101X
- Type
- Allopathic & Osteopathic Physicians
- License No.
- A80165
- License State
- CA
- Taxonomy Description
- An internist who concentrates on disorders of the internal (endocrine) glands such as the thyroid and adrenal glands. This specialist also deals with disorders such as diabetes, metabolic and nutritional disorders, obesity, pituitary diseases and menstrual and sexual problems.
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 | 207RE0101X | Allopathic & Osteopathic Physicians | Internal Medicine | 47835 (AZ) |
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 |
|---|---|---|---|
| 1114977840 | OTHER (01) | AZ | NPI |
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: 03-21-2022
Opt-Out End Date: 03-21-2026
Eligible to Order and Refer? No
Reviews for DR. KAREN LOUISE HERBST PH.D., M.D.
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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 1114977840, we treat the final digit (0) 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 70. The final step is to find the difference between that total and the next multiple of ten (70 - 70 = 0).
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 70 is 70. The difference is the calculated check digit.
Other Providers at the Same Location
The following 2 providers are registered at the same or a nearby location.
TUCSON, AZ 85715
TUCSON, AZ 85715
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1114977840, enumerated as an "individual" on May 11, 2006.
The provider is located at 6365 E TANQUE VERDE RD STE 200 TUCSON, AZ 85715 and the phone number is (520) 719-1610.
Internal Medicine with taxonomy code 207RE0101X and a focus in Endocrinology, Diabetes & Metabolism.
The provider might be accepting Accepts: Medicare and Medicaid. Please consult your insurance carrier or call the provider to verify.
