DR. JANARTHANAN SOMESWARANANTHAN MD
NPI 1134212830
Internal Medicine in Chelmsford, MA

Q: What is Janarthanan Someswarananthan's NPI number?

The NPI number for Janarthanan Someswarananthan is 1134212830. It was assigned to this individual provider in the NPPES registry on October 2, 2006.

Q: What is Janarthanan Someswarananthan's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Active since October 02, 2006PECOS EnrolledAccepts Medicare Assignment

290 LITTLETON RD UNIT 3, CHELMSFORD, MA 01824(978) 685-2460 Get Directions Write a Review

NPPES record last updated: April 13, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Apr 13, 2026, May 28, 2025, Jan 11, 2023 (3 updates tracked since 2023).

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About Dr. Janarthanan Someswarananthan Md NPPES

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

DR. JANARTHANAN SOMESWARANANTHAN MD (NPI 1134212830) is an individual internal medicine provider in Chelmsford, Massachusetts, licensed in Massachusetts (230684) and active in the NPI registry since October 2006. He is enrolled in Medicare PECOS, is affiliated with Anna Jaques Hospital, and maintains a secondary practice location in Newburyport.

NPPES Registry Identity

NPI1134212830

Entity TypeIndividualMale

Primary Taxonomy207R00000X

Provider Legal NameDR. JANARTHANAN SOMESWARANANTHANCredential: MD

Location Address290 LITTLETON RD UNIT 3Chelmsford, MA 01824-3429

Mailing Address290 Littleton Rd Unit 3Chelmsford, MA 01824-3429 · (978) 685-2460

Phone(978) 685-2460

Sole ProprietorYes

Medical School CMSOtherGraduated 1996

Enumeration DateOctober 2, 2006

Last NPPES UpdateApril 13, 20263 updates tracked since enumeration

NPPES CertifiedApril 13, 2026

✔ NPI 1134212830 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

Licenses✔ Licensed in MA · 230684✔ Licensed in FL · ME83087

Definition

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

Also ListedHospitalistTaxonomy 208M00000X · License 230684 (MA)

290 LITTLETON RD UNIT 3, Chelmsford, MA 01824

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Secondary Practice Location 1

Location 125 Highland AveNewburyport, MA 01950-3867 · Phone (978) 463-1000

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield, Taro Health, WellSense Health Plan.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

Dr. Janarthanan Someswarananthan Md 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 ID1557466919

PECOS Enrollment IDI20070413000564, I20200528002078

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

Medicare enrollment records show Janarthanan Someswarananthan reassigns Medicare billing to 9 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Lawrence General Community Medical Service PLLC

Same address

Internal Medicine

290 LITTLETON RD UNIT 3
Chelmsford, MA 01824

Reassigned Medicare billing, Massachusetts and New Hampshire enrollments
58 clinicians in this Medicare group

NPI 1174076418 (978) 685-2460

New England Community Medical Services PLLC

Same address

Internal Medicine

290 LITTLETON RD UNIT 3
Chelmsford, MA 01824

Reassigned Medicare billing, Massachusetts and New Hampshire enrollments
57 clinicians in this Medicare group

NPI 1427376516 (978) 685-2460

Lowell General Inpatient Specialists PLLC

5.1 mi

Internal Medicine

295 VARNUM AVE
Lowell, MA 01854

Reassigned Medicare billing, Massachusetts enrollment
109 clinicians in this Medicare group

NPI 1649626391 (978) 937-6439

Beth Israel Lahey Health Primary Care, Inc.

11 mi

Urology

41 MALL RD
Burlington, MA 01805

Reassigned Medicare billing, Massachusetts enrollment
410 clinicians in this Medicare group

NPI 1043710791 (781) 744-8000

Todays Wellness PLLC

15 mi

Internal Medicine

790 TURNPIKE ST
North Andover, MA 01845

Reassigned Medicare billing, Massachusetts enrollment
13 clinicians in this Medicare group

NPI 1891166559 (978) 687-2273

Life Choice Hospice Of Southern Massachusetts LLC

15 mi

Hospice and Palliative Medicine

790 TURNPIKE ST STE 202
North Andover, MA 01845

Reassigned Medicare billing, Massachusetts enrollment
7 clinicians in this Medicare group

NPI 1073138640 (978) 777-8222

Winchester Lahey Inpatient Specialists PLLC

16 mi

Internal Medicine

41 HIGHLAND AVE
Winchester, MA 01890

Reassigned Medicare billing, Massachusetts enrollment
101 clinicians in this Medicare group

NPI 1144770629 (781) 729-9000

Steward Medical Group, Inc

18 mi

Specialist

9 GALEN ST
Watertown, MA 02472

Reassigned Medicare billing, Massachusetts enrollment
991 clinicians in this Medicare group

NPI 1629398219 (615) 467-4474

Pathways Healthcare, LLC

28 mi

Home Health

101 STATION DR., SUITE 240
Westwood, MA 02090

Reassigned Medicare billing, Massachusetts enrollment
7 clinicians in this Medicare group

NPI 1740529668 (800) 939-1855

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 13

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.

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233

Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.

713 services371 patients

Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month 99490

Chronic care management services involve a healthcare professional directing clinical staff in managing your chronic conditions. This includes the first 20 minutes per month of services like medication management, care coordination, and health monitoring to help improve your health and quality of life.

319 services66 patients

Hospital discharge day management, more than 30 minutes 99239

Hospital discharge day management over 30 minutes involves a detailed process to ensure a smooth transition from hospital to home. It includes final examinations, discussion of your hospital stay, post-discharge instructions, and coordinating follow-up care.

302 services277 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.

214 services171 patients

Initial nursing facility care with moderate level of medical decision making, per day, if using time, at least 35 minutes 99305

An initial nursing facility visit per day is a service where a healthcare professional spends about 35 minutes assessing a patient's health status. This includes reviewing medical history, conducting a physical exam, and developing a care plan based on the patient's needs.

128 services125 patients

Initial nursing facility care with high level of medical decision making, per day, if using time, 50 minutes or more 99306

An initial nursing facility visit is your first meeting with your healthcare team at a nursing facility. Lasting typically 45 minutes, this appointment involves a comprehensive health assessment and the creation of your personalized care plan. It's a crucial step to ensure your health and well-being.

109 services108 patients

Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223

Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.

102 services97 patients

Chronic care management services for two or more chronic conditions, additional 20 minutes of clinical staff time directed by health care professional, per calendar month 99439

Chronic Care Management services involve regular check-ins with healthcare professionals to manage two or more chronic conditions. It includes an additional 20 minutes of clinical staff time per month, directed by a healthcare professional, to ensure optimal health management.

69 services33 patients

Physician or allowed practitioner certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians and G0180

This is a service where a doctor or authorized practitioner certifies that you require Medicare-covered home health services. They will communicate with the home health agency and review reports on your health status to ensure you receive appropriate care. This does not involve an in-person visit.

53 services52 patients

Advance care planning, first 30 minutes 99497

Advance care planning is a process where you discuss your healthcare preferences with your doctor. This conversation, lasting up to 30 minutes, helps ensure your wishes are respected if you're unable to communicate them in the future. It's about your care, your way.

45 services45 patients

Subsequent nursing facility care with high level of medical decision making, per day, if using time, at least 45 minutes 99310

A follow-up nursing facility visit is a routine check-up that typically lasts about 35 minutes. During this visit, your health status is evaluated, any changes in your condition are noted, and necessary adjustments to your care plan are made. It's an essential part of maintaining your health.

41 services39 patients

Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222

Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.

25 services24 patients

Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes 99309

A follow-up nursing facility visit per day is a daily check-in by a healthcare professional. This 25-minute visit typically involves monitoring your health progress, addressing any concerns, and adjusting treatment plans as necessary. It's a vital part of ensuring your ongoing wellbeing.

23 services17 patients

Hospital Affiliations CMS Care Compare 5

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

Anna Jaques Hospital

Acute Care Hospitals · Newburyport, MA

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number220029

Location25 Highland AvenueNewburyport, MA 01950 · Essex County

Emergency services Birthing friendly

Holy Family Hospital

Acute Care Hospitals · Methuen, MA

2/5 CMS rating

OwnershipProprietary

CMS Certification Number220080

Location70 East StreetMethuen, MA 01844 · Essex County

Emergency services Birthing friendly

Beth Israel Deaconess Medical Center

Acute Care Hospitals · Boston, MA

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number220086

Location330 Brookline AvenueBoston, MA 02215 · Suffolk County

Emergency services Birthing friendly

Lahey Hospital & Medical Center, Burlington

Acute Care Hospitals · Burlington, MA

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number220171

Location41 & 45 Mall RoadBurlington, MA 01803 · Middlesex County

Emergency services

Portsmouth Regional Hospital

Acute Care Hospitals · Portsmouth, NH

3/5 CMS rating

OwnershipProprietary

CMS Certification Number300029

Location333 Borthwick AvePortsmouth, NH 03801 · Rockingham County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 01824 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

$144.11 typical visit price

range $63.72 – $189.86

Typical copayment $36.02 (range $15.93 – $47.46)

Most-billed visit code 99204

Established Patient

$111.18 typical visit price

range $21.07 – $155.29

Typical copayment $27.79 (range $5.26 – $38.82)

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.

Referred Medical Equipment & Supplies CMS DME claims 13

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

Insertion tray with drainage bag with indwelling catheter, foley type, two-way latex with coating (teflon, silicone, silicone elastomer or hydrophilic, etc.) A4314

DME-Orthotic Devices · category DF000N

3 suppliers14 claims14 services$20.73 avg. paid by Medicare

Urinary catheter anchoring device, adhesive skin attachment, each A4333

DME-Orthotic Devices · category DF000N

2 suppliers12 claims116 services$2.13 avg. paid by Medicare

Intermittent urinary catheter; straight tip, with or without coating (teflon, silicone, silicone elastomer, or hydrophilic, etc.), each A4351

DME-Orthotic Devices · category DF008N

1 supplier11 claims1,320 services$1.65 avg. paid by Medicare

Bedside drainage bag, day or night, with or without anti-reflux device, with or without tube, each A4357

DME-Orthotic Devices · category DF000N

4 suppliers21 claims24 services$7.98 avg. paid by Medicare

For diabetics only, fitting (including follow-up), custom preparation and supply of off-the-shelf depth-inlay shoe manufactured to accommodate multi-density insert(s), per shoe A5500

DME-Orthotic Devices · category DF000N

5 suppliers28 claims56 services$62.09 avg. paid by Medicare

For diabetics only, multiple density insert, direct formed, molded to foot after external heat source of 230 degrees fahrenheit or higher, total contact with patient's foot, including arch, base layer minimum of 1/4 inch material of shore a 35 durometer or 3/16 inch material of shore a 40 durometer (or higher), prefabricated, each A5512

DME-Orthotic Devices · category DF000N

4 suppliers26 claims156 services$25.32 avg. paid by Medicare

Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

JOE JOSEPH M.D.

Internal Medicine