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ANDREW J. THORNTON M.D.
NPI 1962458091
Internal Medicine - Nephrology in Lewiston, ME

Active since May 26, 2006PECOS EnrolledAccepts Medicare Assignment
98.06/100
CMS Quality Rating
77 BATES ST STE 5, LEWISTON, ME 04240(207) 783-1449(207) 777-3865 Get Directions Write a Review

NPPES record last updated: April 1, 2025. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Andrew J. Thornton M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

ANDREW J. THORNTON M.D. (NPI 1962458091) is an individual nephrology provider in Lewiston, Maine, licensed in Maine (MD17169) and active in the NPI registry since May 2006. He is enrolled in Medicare PECOS, is affiliated with Maine Medical Center, and is a graduate of Boston University School Of Medicine (2000).

NPPES Registry Identity

NPI1962458091
Entity TypeIndividualMale
Primary Taxonomy207RN0300X
Provider Legal NameANDREW J. THORNTONCredential: M.D.
Location Address77 BATES ST STE 5Lewiston, ME 04240-7637
Mailing Address710 Main StLewiston, ME 04240 · (207) 783-1449 · Fax (207) 777-3865
Phone(207) 783-1449
Fax(207) 777-3865
Sole ProprietorNo
Medical School CMSBoston University School Of MedicineGraduated 2000
Enumeration DateMay 26, 2006
Last NPPES UpdateApril 1, 2025
NPPES CertifiedApril 1, 2025
✔ NPI 1962458091 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · NephrologyAllopathic & Osteopathic Physicians
Taxonomy Code207RN0300X
License✔ Licensed in ME · MD17169
Definition
An internist who treats disorders of the kidney, high blood pressure, fluid and mineral balance and dialysis of body wastes when the kidneys do not function. This specialist consults with surgeons about kidney transplantation.
Also ListedInternal MedicineTaxonomy 207R00000X · License MD17169 (ME)
77 BATES ST STE 5, Lewiston, ME 04240
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Other Identifiers 1

Medicaid432279699ME

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield, Harvard Pilgrim Health Care, Taro Health.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Andrew J. Thornton M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID6406895804
PECOS Enrollment IDI20060728000083
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

4

Medicare enrollment records show Andrew Thornton reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Nephrology Associates Of Central Maine
1.8 mi
Specialist
710 MAIN ST
Lewiston, ME 04240
  • Reassigned Medicare billing, Maine enrollment
  • 10 clinicians in this Medicare group
NPI 1528085586 (207) 783-1449
Mainehealth
17 mi
Critical Access
181 MAIN ST
Norway, ME 04268
  • Reassigned Medicare billing, Maine enrollment
  • 3,140 clinicians in this Medicare group
NPI 1447730247 (207) 743-5933
Bridgton Hospital
25 mi
Critical Access
10 HOSPITAL DR
Bridgton, ME 04009
  • Reassigned Medicare billing, Maine enrollment
  • 563 clinicians in this Medicare group
NPI 1154370153 (207) 795-5709
Rumford Hospital
36 mi
Critical Access
420 FRANKLIN ST
Rumford, ME 04276
  • Reassigned Medicare billing, Maine enrollment
  • 544 clinicians in this Medicare group
NPI 1205991122 (207) 369-1000

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 8

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Dialysis services, 4 or more physician visits per month (20 years or older) 90960
Dialysis is a treatment that filters and purifies your blood using a machine. It helps keep your fluids and electrolytes in balance when the kidneys can't do their job. This service includes 4 or more visits per month with a physician to monitor your health and adjust your treatment as needed.
357 services50 patients
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
248 services196 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
183 services79 patients
Hemodialysis procedure with physician evaluation 90935
Hemodialysis is a treatment that uses a machine to filter waste and excess fluid from your blood when your kidneys can't. A physician checks your health before, during, and after the procedure to ensure it's working effectively for you.
91 services46 patients
Home dialysis services per month (20 years or older) 90966
Home dialysis services provide kidney treatment for patients aged 20 or older right in their own homes. This service includes necessary equipment, supplies, and support for performing dialysis. It's a convenient option that allows patients to maintain their daily routines while receiving essential care.
82 services11 patients
Dialysis services, 2-3 physician visits per month (20 years or older) 90961
Dialysis is a treatment that performs the function of healthy kidneys if they're not working properly. It removes waste and excess fluid from your blood. 2-3 physician visits per month are recommended for monitoring your health and adjusting your treatment as needed. This service is available for those aged 20 years and older.
62 services34 patients

Hospital Affiliations CMS Care Compare 5

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Maine Medical Center

Acute Care Hospitals · Portland, ME
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number200009
Location22 Bramhall StPortland, ME 04102 · Cumberland County
Emergency services Birthing friendly

Mid Coast Hospital

Acute Care Hospitals · Brunswick, ME
2/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number200021
Location123 Medical Center DriveBrunswick, ME 04011 · Cumberland County
Emergency services Birthing friendly

Central Maine Medical Center

Acute Care Hospitals · Lewiston, ME
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number200024
Location300 Main StreetLewiston, ME 04240 · Androscoggin County
Emergency services Birthing friendly

St Mary's Regional Medical Center

Acute Care Hospitals · Lewiston, ME
3/5 CMS rating
OwnershipVoluntary non-profit - Church
CMS Certification Number200034
Location93 Campus Avenue - PO Box 291Lewiston, ME 04243 · Androscoggin County
Emergency services

Lincolnhealth

Critical Access Hospitals · Damariscotta, ME
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number201302
Location35 Miles StreetDamariscotta, ME 04543 · Lincoln County
Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 04240 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$123.23 typical visit price
range $53.26 – $162.77
Typical copayment $30.80 (range $13.31 – $40.69)
Most-billed visit code 99204
Established Patient
$94.60 typical visit price
range $16.90 – $132.79
Typical copayment $23.65 (range $4.22 – $33.19)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

98.06/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored through an Alternative Payment Model
Quality86.13
Promoting Interoperability100
Improvement Activities40

Referred Medical Equipment & Supplies CMS DME claims 4

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Prednisone, immediate release or delayed release, oral, 1 mg J7512
Treatment-Treatment - Miscellaneous · category RX029N
1 supplier12 claims1,800 services$0.01 avg. paid by Medicare
Mycophenolate mofetil, oral, 250 mg J7517
Treatment-Treatment - Miscellaneous · category RX029N
1 supplier12 claims2,160 services$0.18 avg. paid by Medicare
Pharmacy supply fee for oral anti-cancer, oral anti-emetic or immunosuppressive drug(s); for the first prescription in a 30-day period Q0511
Treatment-Chemotherapy · category RH012N
1 supplier12 claims12 services$17.36 avg. paid by Medicare
Pharmacy supply fee for oral anti-cancer, oral anti-emetic or immunosuppressive drug(s); for a subsequent prescription in a 30-day period Q0512
Treatment-Chemotherapy · category RH012N
1 supplier20 claims20 services$10.75 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Andrew Thornton's NPI number?

The NPI number for Andrew Thornton is 1962458091. It was assigned to this individual provider in the NPPES registry on May 26, 2006.

Where is Andrew Thornton located?

Andrew Thornton practices at 77 Bates St Ste 5, Lewiston, ME 04240. The listed phone number is (207) 783-1449.

What is Andrew Thornton's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Nephrology, with taxonomy code 207RN0300X.

Is Andrew Thornton enrolled in Medicare?

Yes. Andrew Thornton is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Andrew Thornton's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Andrew Thornton reassigns Medicare benefits to 4 organizations: Nephrology Associates Of Central Maine (Lewiston, ME), Mainehealth (Norway, ME), Bridgton Hospital (Bridgton, ME) and Rumford Hospital (Rumford, ME). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Andrew Thornton's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Andrew Thornton accept?

Health plans from Anthem Blue Cross and Blue Shield, Harvard Pilgrim Health Care and Taro Health list Andrew Thornton as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Andrew Thornton affiliated with any hospitals?

According to CMS data, Andrew Thornton is affiliated with Maine Medical Center, Mid Coast Hospital, Central Maine Medical Center, St Mary's Regional Medical Center and Lincolnhealth.

When was this NPI record last updated?

The NPPES record for Andrew Thornton was last updated on April 1, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.