DR. JOSEPH GRENN D.M.D.
NPI 1245446509
Dentist - Endodontics in San Francisco, CA
NPI Status: Active since May 15, 2007
Contact Information
500 SPRUCE ST
SAN FRANCISCO, CA
ZIP 94118
Phone: (415) 221-2900
Fax: (415) 221-2950
- Individual
- Male
- Dentist
- Endodontics
About JOSEPH GRENN
This page provides the complete NPI Profile along with additional information for Joseph Grenn, a provider established in San Francisco, California with a medical specialization in Dentist, focusing in endodontics . The healthcare provider is registered in the NPI registry with number 1245446509 assigned on May 2007. The practitioner's primary taxonomy code is 1223E0200X with license number 22501 (CA). The provider is registered as an individual and his NPI record was last updated 18 years ago.
- NPI
- 1245446509
- Provider Name
- DR. JOSEPH GRENN D.M.D.
- Gender
- Male
- Entity Type
- Individual
- Location Address
- 500 SPRUCE ST SAN FRANCISCO, CA 94118
- Location Phone
- (415) 221-2900
- Location Fax
- (415) 221-2950
- Mailing Address
- 32 GREAT CIRCLE DRIVE MILL VALLEY, CA 94941
- Mailing Phone
- (415) 221-2900
- Mailing Fax
- (415) 221-2950
- Is Sole Proprietor?
- Yes
- Enumeration Date
- 05-15-2007
- Last Update Date
- 07-08-2007
- Code Navigator
A dentist like Joseph Grenn is a skilled in and licensed provider that diagnoses and treats problems with patients teeth, gums, and related parts of the mouth. Dentists educate patients on how to take care of the teeth and gums and provide information on diet choices that affect oral health. Dentists must be licensed in the state in which they work.
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
Dentist Endodontics
- Taxonomy Code
- 1223E0200X
- Type
- Dental Providers
- License No.
- 22501
- License State
- CA
- Taxonomy Description
- The branch of dentistry that is concerned with the morphology, physiology and pathology of the human dental pulp and periradicular tissues. Its study and practice encompass the basic and clinical sciences including biology of the normal pulp, the etiology, diagnosis, prevention and treatment of diseases and injuries of the pulp and associated periradicular conditions.
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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 | 4 | 5 | 4 | 4 | 6 | 5 | 0 | 9 |
| Step 1: Double the value of the alternate digits, beginning with the rightmost digit. | |||||||||
| 2 | 2 | 8 | 5 | 8 | 4 | 12 | 5 | 0 | |
| Step 2: Add all the doubled and unaffected individual digits from step 1 plus the constant number 24. | |||||||||
| 2 + 2 + 8 + 5 + 8 + 4 + 1 + 2 + 5 + 0 + 24 = 61 | |||||||||
| Step 3: Subtract the total obtained in step 2 from the next higher number ending in zero, the result is the check digit. | |||||||||
| 70 - 61 = 9 | 9 | ||||||||
The NPI number 1245446509 is valid because the calculated check digit 9 using the Luhn validation algorithm matches the last digit of the original NPI number.
Other Providers at the Same Location
The following 5 providers are registered at the same or nearby location.
| NPI | Name / Type | Taxonomy | Address |
|---|---|---|---|
| 1962521302 | DR. DIANE M HIURA DDS Individual | Dentist | 500 SPRUCE ST SUITE 203 SAN FRANCISCO, CA 94118 (415) 752-5244 |
| 1316158751 | DR. RALAN DAI MING WONG Individual | Dentist (Endodontics) | 500 SPRUCE ST STE #204 SAN FRANCISCO, CA 94118 (415) 221-1788 |
| 1205177185 | NEEMA BEHZAD MEHRKHODAVANDI DDS Individual | Dentist (Endodontics) | 500 SPRUCE ST SUITE 204 SAN FRANCISCO, CA 94118 (415) 221-1788 |
| 1306049028 | DR. HAO TRAN DMD Individual | Dentist (General Practice) | 500 SPRUCE ST SUITE #203 SAN FRANCISCO, CA 94118 (415) 752-5244 |
| 1598312126 | JASMINE ROXANNA FLAKE-WARMOTH DDS Individual | Dentist | 500 SPRUCE ST SAN FRANCISCO, CA 94118 (415) 221-1788 |
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1245446509, enumerated in the NPI registry as an "individual" on May 15, 2007
The provider is located at 500 Spruce St San Francisco, Ca 94118 and the phone number is (415) 221-2900
The provider's speciality is Dentist with taxonomy code 1223E0200X with a focus in Endodontics
This NPI record was last updated on May 15, 2007. 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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