Doctor profile · Federal record
Dr. Michael Jonathan Older, M.D.
Gastroenterology Physician (CMS: Internal Medicine) · Ayer, MA
- NPI 1194757625
- 38 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
190 Groton RD, Suite 190
Ayer, MA 014321124
(978) 772-3547
Credentials & registration
- NPI registered
- July 2006 — 20 yrs on file
- Profile last updated
- January 29, 2014
- Year of graduation
- 1988 — 38 yrs since
- Specialty taxonomy
- 207RG0100X — NUCC code
- State license (1)
- Massachusetts #71640
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1194757625. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
661
Distinct HCPCS
10
Medicare allowed
$98,968
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 158 | 116 | $137 | |
43239 |
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 100 | 81 | $119 | |
43249 |
Balloon dilation of esophagus, stomach, and/or upper small bowel using a flexible endoscope, less than 3.0 cm | 83 | 56 | $155 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 74 | 74 | $180 | |
45380 |
Biopsy of large bowel using a flexible endoscope | 53 | 53 | $189 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 51 | 47 | $97 | |
G0105 |
Colorectal cancer screening; colonoscopy on individual at high risk | 48 | 47 | $188 | |
99442 |
Telephone medical discussion with physician, 11-20 minutes | 29 | 21 | $98 | |
G0121 |
Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk | 25 | 24 | $187 | |
99203 |
New patient office or other outpatient visit, 30-44 minutes | 15 | 15 | $123 |
In context: peer comparison
Among 1 peers in Ayer Gastroenterology Physician, average services per provider: 55. This provider delivers 12× the peer median.Open Payments
Industry payments received
All-time total
$56
Transactions
3
Manufacturers
2
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Phathom Pharmaceuticals, INC. | 2 | $40.63 | |
| Braintree Laboratories, INC. | 1 | $14.95 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
1,676
Patients
517
Total drug cost
$84,507
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Omeprazole | Generic | 943 | 219 | $23,881 |
| Pantoprazole Sodium | Generic | 175 | 43 | $4,159 |
| Sucralfate | Generic | 84 | 20 | $10,020 |
| Sod Sulf-Potass Sulf-Mag Sulf (Sodium, Potassium,Mag Sulfates) | Brand | 77 | 76 | $5,473 |
| Gavilyte-G (Peg3350/Sod Sulf,Bicarb,Cl/Kcl) | Brand | 75 | 73 | $1,266 |
| Metoclopramide Hcl | Generic | 62 | 0 | $598 |
| Dicyclomine Hcl | Generic | 55 | 15 | $986 |
| Diphenoxylate-Atropine (Diphenoxylate Hcl/Atropine) | Brand | 37 | 0 | $680 |
| Linzess (Linaclotide) | Brand | 31 | 0 | $17,278 |
| Mesalamine ER (Mesalamine) | Brand | 31 | 0 | $12,763 |
Hospital affiliations
Frequently asked questions
What is Dr. Michael Jonathan Older's medical specialty?
Dr. Michael Jonathan Older practices Gastroenterology Physician in Ayer, MA.
Where does Dr. Michael Jonathan Older practice?
Dr. Michael Jonathan Older practices at 190 Groton RD, Ayer, MA 014321124. Office phone: 9787723547.
What is Dr. Michael Jonathan Older's NPI?
Dr. Michael Jonathan Older's National Provider Identifier (NPI) is 1194757625, issued by NPPES.
Does Dr. Michael Jonathan Older accept Medicare assignment?
Dr. Michael Jonathan Older does not accept Medicare assignment for all services. Patients may be billed amounts beyond Medicare-allowed charges.
What procedures does Dr. Michael Jonathan Older commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (HCPCS 43239); Balloon dilation of esophagus, stomach, and/or upper small bowel using a flexible endoscope, less than 3.0 cm (HCPCS 43249). Source: CMS Medicare Physician & Other Practitioners file.