FRED M DRENNAN MD
NPI 1811916489
Internal Medicine - Gastroenterology in Seattle, WA
NPI Status: Active since July 18, 2006
Contact Information
1100 9TH AVE
SEATTLE, WA
ZIP 98101
Phone: (206) 223-6600
- Individual
- Male
- Internal Medicine
- Gastroenterology
- Accepts Insurance
About FRED DRENNAN
This page provides the complete NPI Profile along with additional information for Fred Drennan, an internist established in Seattle, Washington with a medical specialization in Internal Medicine, focusing in gastroenterology . The healthcare provider is registered in the NPI registry with number 1811916489 assigned on July 2006. The practitioner's primary taxonomy code is 207RG0100X with license number MD00022840 (WA). The provider is registered as an individual and his NPI record was last updated 14 years ago.
- NPI
- 1811916489
- Provider Name
- FRED M DRENNAN MD
- Gender
- Male
- Entity Type
- Individual
- Location Address
- 1100 9TH AVE SEATTLE, WA 98101
- Location Phone
- (206) 223-6600
- Mailing Address
- 1100 9TH AVE MS:M4-PFS SEATTLE, WA 98101
- Mailing Phone
- (206) 515-5811
- Is Sole Proprietor?
- No
- Enumeration Date
- 07-18-2006
- Last Update Date
- 12-03-2012
- Code Navigator
An internist like Fred Drennan 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 Gastroenterology
- Taxonomy Code
- 207RG0100X
- Type
- Allopathic & Osteopathic Physicians
- License No.
- MD00022840
- License State
- WA
- Taxonomy Description
- An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.
Insurance Plans Accepted
According to publicly available information the provider might be accepting the following health plans from these health insurance companies:
- Core Bronze HSA 10600 - EPO
- Core Bronze HSA 7500 - EPO
- Core Bronze HSA 8300 - EPO
- Core Gold 1500 - EPO
- Core Gold 3000 - EPO
- Core Silver 3500 - EPO
- Core Silver 4500 - EPO
- Core Silver 5000 - EPO
- Core Silver 7500 - EPO
- Core Standard Expanded Bronze HSA - EPO
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.
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.
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 |
|---|---|---|---|
| 8852080 | MEDICARE PIN (08) | WA | |
| P00190313 | OTHER (01) | WA | RAILROAD MEDICARE |
| F10065 | MEDICARE UPIN (02) | ||
| 3366DR | OTHER (01) | WA | BLUE SHIELD |
| 8897398 | MEDICARE PIN (08) | WA | |
| 1811916489 | OTHER (01) | WA | MONTANA MEDICAID |
| US4583038 | OTHER (01) | WA | AETNA/USHC SPECIALIST |
| 8804093 | MEDICARE PIN (08) | WA | |
| 0039580 | OTHER (01) | WA | LABOR & INDUSTRY |
| 8113987 | MEDICAID (05) | WA |
Areas of Expertise
The following services and procedures, recently provided to Medicare patients, illustrate the range of care this provider offers. This list reflects the variety of services available to all patients visiting the practice and is based on 2022 Medicare dataset. In general, the more frequently a provider treats specific conditions or performs particular procedures, the more experienced they become in addressing similar patient needs. The provider has delivered many of the services listed below to Medicare patients. Please note that this list does not include services provided to patients who are not covered by Medicare.
Biopsy of large bowel using a flexible endoscope
A biopsy of the large bowel using a flexible endoscope is a procedure where a thin, flexible tube with a camera is inserted through the rectum to examine the bowel. If abnormal tissue is found, a small sample is taken for further examination. This helps in diagnosing conditions like inflammation, polyps, or cancer.
This service was performed 11 times for 11 patientsReviews for FRED M DRENNAN MD
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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 1811916489, we treat the final digit (9) 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 61. The final step is to find the difference between that total and the next multiple of ten (70 - 61 = 9).
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 61 is 70. 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.
SEATTLE, WA 98101
SEATTLE, WA 98101
SEATTLE, WA 98101
SEATTLE, WA 98101
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1811916489, enumerated as an "individual" on July 18, 2006.
The provider is located at 1100 9TH AVE SEATTLE, WA 98101 and the phone number is (206) 223-6600.
Internal Medicine with taxonomy code 207RG0100X and a focus in Gastroenterology.
The provider might be accepting Accepts: PacificSource Health Plans, Medicare, Medicaid,. Please consult your insurance carrier or call the provider to verify.
