DR. ISABEL C GAY DDS, MS
NPI 1518117548
Dentist - Periodontics in Alton, IL
NPI Status: Active since September 26, 2008
Contact Information
2800 COLLEGE AVE
ALTON, IL
ZIP 62002
Phone: (618) 474-7397
Fax: (618) 474-7124
- Individual
- Female
- Dentist
- Periodontics
- Accepts Insurance
- PECOS Enrolled
About ISABEL GAY
This page provides the complete NPI Profile along with additional information for Isabel Gay, a provider established in Alton, Illinois with a medical specialization in Dentist, focusing in periodontics . The healthcare provider is registered in the NPI registry with number 1518117548 assigned on September 2008. The practitioner's primary taxonomy code is 1223P0300X with license number 136000266 (IL). The provider is registered as an individual and her NPI record was last updated 2 years ago.
- NPI
- 1518117548
- Provider Name
- DR. ISABEL C GAY DDS, MS
- Gender
- Female
- Entity Type
- Individual
- Location Address
- 2800 COLLEGE AVE ALTON, IL 62002
- Location Phone
- (618) 474-7397
- Location Fax
- (618) 474-7124
- Mailing Address
- 2800 COLLEGE AVE ALTON, IL 62002
- Mailing Phone
- (618) 474-7397
- Is Sole Proprietor?
- Yes
- Enumeration Date
- 09-26-2008
- Last Update Date
- 10-12-2023
- Code Navigator
A dentist like Isabel Gay 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 Periodontics
- Taxonomy Code
- 1223P0300X
- Type
- Dental Providers
- License No.
- 136000266
- License State
- IL
- Taxonomy Description
- That specialty of dentistry which encompasses the prevention, diagnosis and treatment of diseases of the supporting and surrounding tissues of the teeth or their substitutes and the maintenance of the health, function and esthetics of these structures and tissues.
Insurance Plans Accepted
According to publicly available information the provider might be accepting the following health plans from these health insurance companies:
- Anthem Bronze Essential 6500 HSA (+ Incentives) - HMO
- Anthem Bronze Essential 7500 Standard ($0 Virtual PCP + $0 Select Drugs + Incentives) - HMO
- Anthem Bronze Essential 9200 (+ Incentives) - HMO
- Anthem Bronze Essential 9200 Adult Dental/Vision (+ Incentives) - HMO
- Anthem Bronze Essential POS 5500 ($0 Virtual PCP + $0 Select Drugs + Incentives) - POS
- Anthem Bronze Essential POS 7500 Standard ($0 Virtual PCP + $0 Select Drugs + Incentives) - POS
- Anthem Bronze Pathway 6900 ($0 Virtual PCP + $0 Select Drugs + Incentives) - EPO
- Anthem Bronze Pathway 7500 Standard ($0 Virtual PCP + $0 Select Drugs + Incentives) - EPO
- Anthem Bronze Pathway 9200 (+ Incentives) - EPO
- Anthem Bronze Pathway HMO 7450 for HSA - HMO
- Anthem Bronze Pathway HMO 7500 Standard ($0 Virtual PCP + $0 Select Drugs) - HMO
- Anthem Bronze Pathway HMO 9200 ($0 Virtual PCP + $0 Select Drugs) - HMO
- Anthem Bronze Pathway HMO 9200 Adult Dental & Vision ($0 Virtual PCP + $0 Select Drugs) - HMO
- Anthem Bronze Pathway/Lean 5000 (3 Free PCP Visits + $0 Select Drugs + Incentives) - HMO
- Anthem Bronze Pathway/Lean HSA (+ Incentives) - HMO
- Anthem Bronze Pathway/Lean Standard ($0 Virtual PCP + $0 Select Drugs + Incentives) - HMO
- Anthem Bronze Priority/Lean 5000 (3 Free PCP Visits + $0 Select Drugs + Incentives) - HMO
- Anthem Bronze Priority/Lean HSA (+ Incentives) - HMO
- Anthem Bronze Priority/Lean Standard ($0 Virtual PCP + $0 Select Drugs + Incentives) - HMO
- Anthem Catastrophic Pathway 9200 (+ Incentives) - EPO
- BlueCare Dental 4 Kids? 1A - PPO
- BlueCare Dental 4 Kids? 1B - PPO
- BlueCare Dental? 1A - PPO
- BlueCare Dental? 1B - PPO
- BlueCare Dental? 1C - PPO
- BlueCare Dental? 1D - PPO
- BlueCare Dental 4 Kids? 1A - PPO
- BlueCare Dental 4 Kids? 1B - PPO
- BlueCare Dental? 1A - PPO
- BlueCare Dental? 1B - PPO
- BlueCare Dental? 1C - PPO
- BlueCare Dental? 1D - PPO
- BlueCare Dental 4 Kids? 1A - PPO
- BlueCare Dental 4 Kids? 1B - PPO
- BlueCare Dental? 1A - PPO
- BlueCare Dental? 1B - PPO
- BlueCare Dental? 1C - PPO
- BlueCare Dental? 1D - PPO
- BlueCare Dental 1D - PPO
- BlueCare Dental 4 Kids? 1A - PPO
- BlueCare Dental 4 Kids? 1B - PPO
- BlueCare Dental? 1A - PPO
- BlueCare Dental? 1B - PPO
- BlueCare Dental? 1C - PPO
*Please verify directly with this provider to make sure your insurance plan is currently accepted.
Medicare Participation & PECOS Enrollment Status
Isabel Gay 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) and a Home Health Agency (HHA).
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: No
Physician Visit Costs
The pricing information below displays the copayment minimum, maximum and average amount that patients under Medicare are charged when visiting this provider as a new or established patient. Please keep in mind that these prices are just for reference purposes, and the actual prices charged by the provider might be different.
For patients covered under private health plans the prices below are also useful as healthcare pricing for private insurance is usually established as a function of Medicare prices. Private insurance covered patients should check their individual plans to determine the exact pricing.
The prices below reflect the costs for new and established patients in the 62002 ZIP code area.
New Patients Visit Costs *
The most utilized procedure code for new patients office visits is 99203
- Average New Patient Price $88.44
- Minimum New Patient Price $56.28
- Maximum New Patient Price $173.35
- Average New Patient Copayment $22.11
- Minimum New Patient Copayment $14.07
- Maximum New Patient Copayment $43.33
Established Patients Visit Costs *
The most utilized procedure code for established patients office visits is 99213
- Average Established Patient Price $70.42
- Minimum Established Patient Price $17.51
- Maximum Established Patient Price $139.99
- Average Established Patient Copayment $17.6
- Minimum Established Patient Copayment $4.37
- Maximum Established Patient Copayment $34.99
* The physician office visit costs information is generated by statistical analysis of similar providers in the same geographical area. The pricing information above IS NOT the amount charged by this provider.
Reviews for DR. ISABEL C GAY DDS, MS
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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 | 5 | 1 | 8 | 1 | 1 | 7 | 5 | 4 | 8 |
| Step 1: Double the value of the alternate digits, beginning with the rightmost digit. | |||||||||
| 2 | 5 | 2 | 8 | 2 | 1 | 14 | 5 | 8 | |
| Step 2: Add all the doubled and unaffected individual digits from step 1 plus the constant number 24. | |||||||||
| 2 + 5 + 2 + 8 + 2 + 1 + 1 + 4 + 5 + 8 + 24 = 62 | |||||||||
| Step 3: Subtract the total obtained in step 2 from the next higher number ending in zero, the result is the check digit. | |||||||||
| 70 - 62 = 8 | 8 | ||||||||
The NPI number 1518117548 is valid because the calculated check digit 8 using the Luhn validation algorithm matches the last digit of the original NPI number.
Other Providers at the Same Location
The following 20 providers are registered at the same or nearby location.
| NPI | Name / Type | Taxonomy | Address |
|---|---|---|---|
| 1215912696 | SOUTHERN ILLINOIS UNIVERSITY EDWARDSVILLE SCHOOL OF DENTAL MEDICINE Organization | Dentist (General Practice) | 2800 COLLEGE AVE ALTON, IL 62002 (618) 474-7080 |
| 1083885149 | DR. DEBRA MARIE SCHWENK DMD Individual | Dentist (General Practice) | 2800 COLLEGE AVE ALTON, IL 62002 (618) 474-7080 |
| 1285880955 | DR. WESLEY JAMES ARBUCKLE D.D.S. Individual | Dentist | 2800 COLLEGE AVE ALTON, IL 62002 (618) 474-7164 |
| 1033354956 | DR. ADAM KENNEDY REMM DMD Individual | Dentist | 2800 COLLEGE AVE ALTON, IL 62002 (618) 474-7000 |
| 1225337009 | DR. JEFFREY R NAYLOR D.M.D. Individual | Dentist | 2800 COLLEGE AVE ALTON, IL 62002 (618) 474-7006 |
| 1144591215 | DR. NATHANIEL BLAKE SWAAR D.M.D. Individual | Dentist | 2800 COLLEGE AVE ALTON, IL 62002 (618) 474-7000 |
| 1104191881 | DR. MIRYAM NATHALIA GARCIA DDS Individual | Dentist (Periodontics) | 2800 COLLEGE AVE ALTON, IL 62002 (618) 474-7208 |
| 1801142328 | MOHAMEDTAREK A OMRAN BDS Individual | Dentist | 2800 COLLEGE AVE ALTON, IL 62002 (618) 474-7000 |
| 1487094538 | DR. HILLARY ELIZABETH FREY D.D.S. Individual | Dentist | 2800 COLLEGE AVE ALTON, IL 62002 (618) 474-7170 |
| 1225470958 | DR. ASHLEY MARIE MEYERS DMD Individual | Dentist | 2800 COLLEGE AVE ALTON, IL 62002 (217) 474-7000 |
| 1144509225 | DR. SHEU-LUN JASON MOK D.M.D Individual | Dentist | 2800 COLLEGE AVE ALTON, IL 62002 (618) 474-7006 |
| 1154715795 | DR. SERGEY DOLGOV Individual | Dentist | 2800 COLLEGE AVE ALTON, IL 62002 (618) 747-7000 |
| 1528442209 | NICK BISHOP Individual | Dentist | 2800 COLLEGE AVE ALTON, IL 62002 (618) 474-7000 |
| 1548632318 | DR. ANA BISCONTINE D.M.D. Individual | Dentist | 2800 COLLEGE AVE ALTON, IL 62002 (618) 474-7000 |
| 1750510301 | DR. KATHRYN RAE KOSTEN D.M.D. Individual | Dentist | 2800 COLLEGE AVE BLDG 263 RM 1102 ALTON, IL 62002 (618) 474-7095 |
| 1245751783 | MOLLY ELIZABETH STICE DMD Individual | Dentist | 2800 COLLEGE AVE ALTON, IL 62002 (618) 474-7000 |
| 1174044614 | ASHLEY LYNN CAIN Individual | Dentist | 2800 COLLEGE AVE ALTON, IL 62002 (618) 474-7164 |
| 1518488964 | DR. ERIN EDEN GUNDERSON DMD Individual | Dentist | 2800 COLLEGE AVE ALTON, IL 62002 (618) 474-7000 |
| 1982120143 | ANDREW WIRTZ D.M.D Individual | Dentist | 2800 COLLEGE AVE ALTON, IL 62002 (618) 474-7000 |
| 1184118044 | BRITTANY ERIN PHAM DMD Individual | Dentist | 2800 COLLEGE AVE ALTON, IL 62002 (618) 474-7000 |
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1518117548, enumerated in the NPI registry as an "individual" on September 26, 2008
The provider is located at 2800 College Ave Alton, Il 62002 and the phone number is (618) 474-7397
The provider's speciality is Dentist with taxonomy code 1223P0300X with a focus in Periodontics
The provider might be accepting Accepts: Anthem Blue Cross and Blue Shield, Blue Cross and. Please consult your insurance carrier or call the provider to make sure your health plan is currently accepted.
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) and a Home Health Agency (HHA).
Medicare beneficiaries should expect a typical cost of $88.44 with an average copayment of $22.11 for new patient appointments. Established patients should expect a typical charge of $70.42 and an average copayment of 17.6. Please review your insurance plan or contact the provider directly to determine your specific costs.
This NPI record was last updated on September 26, 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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