MICHAEL JONATHAN OLDER M.D.
NPI 1194757625
Internal Medicine - Gastroenterology in Ayer, MA

Q: What is Michael Jonathan Older's NPI number?

The NPI number for Michael Jonathan Older is 1194757625. It was assigned to this individual provider in the NPPES registry on July 7, 2006.

Q: What is Michael Jonathan Older's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

Active since July 07, 2006PECOS Enrolled

190 GROTON RD, SUITE 190, AYER, MA 01432(978) 772-3547 Get Directions Write a Review

NPPES record last updated: January 29, 2014. Verified against the NPPES registry weekly; last sync: November 01, 2026.

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About Michael Jonathan Older M.d. NPPES

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

MICHAEL JONATHAN OLDER M.D. (NPI 1194757625) is an individual gastroenterology provider in Ayer, Massachusetts, licensed in Massachusetts (71640) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS, is affiliated with Saint Anne's Hospital, and is a graduate of Tufts University School Of Medicine (1988).

NPPES Registry Identity

NPI1194757625

Entity TypeIndividualMale

Primary Taxonomy207RG0100X

Provider Legal NameMICHAEL JONATHAN OLDERCredential: M.D.

Location Address190 GROTON RD, SUITE 190Ayer, MA 01432-1124

Mailing Address190 Groton Rd, Suite 190Ayer, MA 01432-1124 · (978) 772-3547

Phone(978) 772-3547

Sole ProprietorNo

Medical School CMSTufts University School Of MedicineGraduated 1988

Enumeration DateJuly 7, 2006

Last NPPES UpdateJanuary 29, 2014

✔ NPI 1194757625 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians

Taxonomy Code207RG0100X

License✔ Licensed in MA · 71640

Definition

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.

190 GROTON RD, Ayer, MA 01432

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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Michael Jonathan Older M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID3375590086

PECOS Enrollment IDI20050405000885

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 Michael Jonathan Older reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Steward Medical Group, Inc

25 mi

Specialist

9 GALEN ST
Watertown, MA 02472

Reassigned Medicare billing, Massachusetts enrollment
1,103 clinicians in this Medicare group

NPI 1629398219 (615) 467-4474

Lifespan Physician Group Of Massachusetts Inc

49 mi

Family Medicine

2007 BAY ST
Taunton, MA 02780

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

NPI 1235957713 (774) 409-2009

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 11

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.

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

160 services129 patients

Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope 43239

This procedure involves using a thin, flexible tube with a light and camera, known as an endoscope, to examine the esophagus, stomach, and upper part of the small intestine. Small tissue samples are taken for further examination to help diagnose various conditions.

66 services63 patients

Balloon dilation of esophagus, stomach, and/or upper small bowel using a flexible endoscope, less than 3.0 cm 43249

This procedure involves using a flexible tube with a camera, called an endoscope, to gently expand narrowed areas in your esophagus, stomach, or upper small bowel. A small balloon is inflated, making it easier for food and liquid to pass through. It's safe and effective.

42 services33 patients

New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203

This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.

41 services41 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.

27 services24 patients

Colorectal cancer screening; colonoscopy on individual at high risk G0105

Colorectal cancer screening, specifically a colonoscopy, is a preventive measure for those at high risk. A thin, flexible tube with a camera inspects the colon to spot any abnormal growths. This test helps detect potential issues early, enhancing the effectiveness of treatment.

27 services27 patients

Hospital Affiliations CMS Care Compare 2

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

Saint Anne's Hospital

Acute Care Hospitals · Fall River, MA

3/5 CMS rating

OwnershipProprietary

CMS Certification Number220020

Location795 Middle StreetFall River, MA 02721 · Bristol County

Emergency services

Morton Hospital

Acute Care Hospitals · Taunton, MA

1/5 CMS rating

OwnershipProprietary

CMS Certification Number220073

Location88 Washington StreetTaunton, MA 02780 · Bristol County

Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 01432 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.

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.

STEVEN R. BRUSIE M.D.

Ophthalmology

190 GROTON RD
AYER, MA 01432

Middlesex County (978) 772-4000

CHRISTA L. MAXANT, INC.

Community/Behavioral Health

190 GROTON RD, SUITE 230
AYER, MA 01432

Middlesex County (978) 796-5054

RICHARD P SCHWARTZ MD PC

Internal Medicine (Gastroenterology)

190 GROTON RD, SUITE 200
AYER, MA 01432

Middlesex County (978) 772-7500

MICHAEL V. ELMAN M.D., P.C.

Orthopaedic Surgery

190 GROTON RD, SUITE 170
AYER, MA 01432

Middlesex County (978) 772-2600

PAUL L GUNDERSON, M.D., P.C.

Eyewear Supplier

190 GROTON RD, SUITE 240
AYER, MA 01432

Middlesex County (978) 772-4000

JEFFREY P ARPIN M.D.

Surgery

190 GROTON RD, STE 210
AYER, MA 01432

Middlesex County (978) 772-6265

PRIMARY CARE SPECIALISTS INC.

Clinic/Center (Primary Care)

190 GROTON RD, SUITE 110
AYER, MA 01432

Middlesex County (978) 772-2780

PAUL L. GUNDERSON M.D.

Ophthalmology

190 GROTON RD
AYER, MA 01432

Middlesex County (978) 772-4000

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 Michael Jonathan Older's NPI number?

The NPI number for Michael Jonathan Older is 1194757625. It was assigned to this individual provider in the NPPES registry on July 7, 2006.

Where is Michael Jonathan Older located?

Michael Jonathan Older practices at 190 Groton Rd Suite 190, Ayer, MA 01432. The listed phone number is (978) 772-3547.

What is Michael Jonathan Older's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

Is Michael Jonathan Older enrolled in Medicare?

Yes. Michael Jonathan Older is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Michael Jonathan Older's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Michael Jonathan Older reassigns Medicare benefits to 2 organizations: Steward Medical Group, Inc (Watertown, MA) and Lifespan Physician Group Of Massachusetts Inc (Taunton, MA). 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 Michael Jonathan Older's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Michael Jonathan Older affiliated with any hospitals?

According to CMS data, Michael Jonathan Older is affiliated with Saint Anne's Hospital and Morton Hospital.

When was this NPI record last updated?

The NPPES record for Michael Jonathan Older was last updated on January 29, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 years 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.