ATLANTIC DIGESTIVE SPECIALISTS, PLLC
NPI 1316048069
Internal Medicine - Gastroenterology in Somersworth, NH
NPI Status: Active since September 26, 2006
Contact Information
21 CLARK WAY
SOMERSWORTH, NH
ZIP 03878
Phone: (603) 692-2228
Fax: (603) 692-4748
- Organization
- Internal Medicine
- Gastroenterology
- Accepts Insurance
- CLIA Number: 30D0717428
- CLIA Cert. Type: Physician Office
- CLIA Exp. Date: 06-23-2027
About ATLANTIC DIGESTIVE SPECIALISTS, PLLC
This page provides the complete NPI Profile along with additional information for Atlantic Digestive Specialists, Pllc, an internist established in Somersworth, New Hampshire operating as a Internal Medicine, focusing in gastroenterology . The healthcare provider is registered in the NPI registry with number 1316048069 assigned on September 2006. The practitioner's primary taxonomy code is 207RG0100X. The provider is registered as an organization and their NPI record was last updated April 2026. The organization operates as a Single Specialty Group with one or more individual practitioners, all of who practice with the same area of specialization. The authorized official of this NPI record is Sean P Lynch Md (President)
- NPI
- 1316048069
- Provider Name
- ATLANTIC DIGESTIVE SPECIALISTS, PLLC
- Entity Type
- Organization
- Location Address
- 21 CLARK WAY SOMERSWORTH, NH 03878
- Location Phone
- (603) 692-2228
- Location Fax
- (603) 692-4748
- Mailing Address
- 21 CLARK WAY SOMERSWORTH, NH 03878
- Mailing Phone
- (603) 692-2228
- Mailing Fax
- (603) 692-4748
- Is Sole Proprietor?
- No
- Is Organization Subpart?
- No
- Enumeration Date
- 09-26-2006
- Last Update Date
- 04-16-2026
- Code Navigator
An internist like Atlantic Digestive Specialists, Pllc 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
Secondary Locations
- 330 Borthwick Ave Ste 311
Portsmouth, NH 03801
(603) 692-2228 - 330 Borthwick Ave Ste 300
Portsmouth, NH 03801
(603) 692-2228
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
- 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.
Group Taxonomy 193400000X SINGLE SPECIALTY GROUP
This provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.
Insurance Plans Accepted
According to publicly available information the provider might be accepting the following health plans from these health insurance companies:
- Anthem Bronze Preferred Blue PPO 6000/20%/8000 w/HSA - PPO
- Anthem Bronze Preferred Blue PPO 7000/50%/8000 w/HSA - PPO
- Anthem Bronze Preferred Blue PPO 7500/30%/10000 Value - PPO
- Anthem Bronze Preferred Blue PPO 8500/50%/9200 - PPO
- Anthem Gold Preferred Blue PPO 1000/20%/7500 - PPO
- Anthem Gold Preferred Blue PPO 2000/0%/6500 RxD - PPO
- Anthem Gold Preferred Blue PPO 2000/10%/4600 w/HSA - PPO
- Anthem Gold Preferred Blue PPO 2000/10%/7500 - PPO
- Anthem Gold Preferred Blue PPO 2000/20%/4600 w/HSA - PPO
- Anthem Gold Preferred Blue PPO 3000/0%/7500 RxD - PPO
- Anthem Gold Preferred Blue PPO 500/30%/9000 - PPO
- Anthem Platinum Preferred Blue PPO 250/10%/3500 - PPO
- Anthem Silver Preferred Blue PPO 2500/30%/10000 Value - PPO
- Anthem Silver Preferred Blue PPO 3000/30%/9000 Value - PPO
- Anthem Silver Preferred Blue PPO 3500/20%/10000 - PPO
- Anthem Silver Preferred Blue PPO 3500/20%/7250 w/HSA - PPO
- Anthem Silver Preferred Blue PPO 4000/0%/9000 - PPO
- Anthem Silver Preferred Blue PPO 4000/0%/9000 RxD - PPO
- Anthem Silver Preferred Blue PPO 4000/10%/7250 w/HSA - PPO
- Anthem Silver Preferred Blue PPO 4000/20%/8500 - PPO
- Anthem Bronze Pathway X Enhanced 6000/35% HSA - HMO
- Anthem Bronze Pathway X Enhanced 7000/0% ($0 Virtual PCP + $0 Select Drugs) - HMO
- Anthem Bronze Pathway X Enhanced 7500/50% ($0 Virtual PCP + $0 Select Drugs) Standard - HMO
- Anthem Catastrophic Pathway X Enhanced - HMO
- Anthem Gold Pathway X Enhanced 1200/20% ($0 Virtual PCP + $0 Select Drugs) - HMO
- Anthem Gold Pathway X Enhanced 2000/25% ($0 Virtual PCP + $0 Select Drug) Standard - HMO
- Anthem Gold Pathway X Enhanced 700/40% ($0 Virtual PCP + $0 Select Drugs) - HMO
- Anthem Heart Healthy Bronze Pathway X Enhanced 6000/40% ($0 Virtual PCP + $0 Select Drugs) - HMO
- Anthem Heart Healthy Silver Pathway X Enhanced 4000/0% ($0 Virtual PCP + $0 Select Drugs) - HMO
- Anthem Silver Pathway X Enhanced 4500/20% HSA - HMO
- Anthem Silver Pathway X Enhanced 5500/20% ($0 Virtual PCP + $0 Select Drugs) - HMO
- Anthem Silver Pathway X Enhanced 6000/40% ($0 Virtual PCP + $0 Select Drugs) Standard - HMO
- Anthem Bronze Access Blue New England HMO 6000/20%/8000 w/HSA - HMO
- Anthem Bronze Access Blue New England HMO 7000/50%/8000 w/HSA - HMO
- Anthem Bronze Access Blue New England HMO 7500/30%/10000 Value - HMO
- Anthem Bronze Access Blue New England HMO 8500/50%/9200 - HMO
- Anthem Bronze Pathway X HMO 6000/20%/8000 w/HSA - HMO
- Anthem Bronze Pathway X HMO 7000/50%/8000 w/HSA - HMO
- Anthem Bronze Pathway X HMO 7500/30%/10000 Value - HMO
- Anthem Bronze Pathway X HMO 8500/50%/9200 - HMO
- WellSense Clarity NH Bronze 6500 HSA + $0 Rx List + 24/7 Nurse Advice - HMO
- WellSense Clarity NH Bronze 7500 HSA + $0 Rx List + 24/7 Nurse Advice - HMO
- WellSense Clarity NH Bronze 7600 HSA + $0 Rx List + 24/7 Nurse Advice - HMO
- WellSense Clarity NH Gold 2000 + $0 Rx List + 24/7 Nurse Advice - HMO
- WellSense Clarity NH Silver 0 Deductible + $0 Rx List + 24/7 Nurse Advice - HMO
- WellSense Clarity NH Silver 3400 + $0 Rx List + 24/7 Nurse Advice - HMO
- WellSense Clarity NH Silver 6000 + $0 Rx List + 24/7 Nurse Advice - HMO
*Please verify directly with this provider to make sure your insurance plan is currently accepted.
CLIA Information
The Clinical Laboratory Improvement Amendments (CLIA) of 1988 applies to facilities or sites that test human specimens for health assessment or to diagnose, prevent, or treat disease. The CLIA Program sets standards for clinical laboratory testing and issues certificates. The NPI / CLIA crosswalk information for this NPI number is:
- CLIA Number
- 30D0717428
- Facility Type
- Physician Office
- Certificate Effective Date
- June 24, 2025
- Certificate Expiration Date
- June 23, 2027
- Laboratory Director
- ROGER M. EPSTEIN
- Certificate Type
- Certificate of Waiver
- Certificate Type Description
- This CLIA certificate is issued to Atlantic Digestive Specialists, Pllc to perform only waived tests. CLIA defines waived tests as simple tests with a low risk for an incorrect result. Waived tests include certain tests listed in CLIA regulations, tests cleared by the FDA for home use and tests approved by the FDA for waived status and that meet CLIA waiver criteria.
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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 1316048069, 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 51. The final step is to find the difference between that total and the next multiple of ten (60 - 51 = 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 51 is 60. The difference is the calculated check digit.
Other Providers at the Same Location
The following 13 providers are registered at the same or a nearby location.
SOMERSWORTH, NH 03878
SOMERSWORTH, NH 03878
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1316048069, enumerated as an "organization" on September 26, 2006.
The provider is located at 21 CLARK WAY SOMERSWORTH, NH 03878 and the phone number is (603) 692-2228.
Internal Medicine with taxonomy code 207RG0100X and a focus in Gastroenterology.
The provider might be accepting Accepts: Anthem Blue Cross and Blue Sheld, Anthem Blue. Please consult your insurance carrier or call the provider to verify.
