Dr. Harald C. Ott, MD
- Medicare services, 2023
- 191
- Industry payments
- $5,579
- Affiliated sites
- 2
- Medical groups
- 2
- State licenses
- 2
- Practice address
- Massachusetts General Hospital, Boston, MA 02114
- Practice phone
- Call (617) 724-9410
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
The General Hospital - Boston (Massachusetts General Hospital)
Multi-specialty group site · Boston, Massachusetts
Find Dr. Ott's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Harald C. Ott is a general surgeon in Boston, Massachusetts
Dr. Ott practices at The General Hospital - Boston (Massachusetts General Hospital) in Boston, Massachusetts.
Dr. Ott's NPI, 1295862639, was assigned on February 27, 2007. Dr. Ott holds Massachusetts license L-228287.
- NPI
- 1295862639NPI Registry (opens in a new tab)
- NPI enumeration date
- February 27, 2007
- NPI status
- Active
- Practice phone
- (617) 724-9410
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Harald C. Ott practices at 2 locations in Boston, Massachusetts
Dr. Ott's primary practice is The General Hospital - Boston (Massachusetts General Hospital), at Massachusetts General Hospital, Boston, MA 02114. The practice phone is (617) 724-9410. The NPI Registry lists Dr. Ott's practice address as 55 Fruit St, Boston, MA 02114.
- The General Hospital - Boston (Massachusetts General Hospital)PrimaryMassachusetts General Hospital, Boston, MA 02114Phone(617) 724-9410
- NPI Registry address55 Fruit St, Boston, MA 02114 · Suffolk CountyPhone(617) 726-2066
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; Doctors and Clinicians National Downloadable File (CMS); and Dmand AI Practice Data
Dr. Harald C. Ott is affiliated with 2 sites of care and 2 medical groups
Dr. Ott's primary practice is The General Hospital - Boston (Massachusetts General Hospital) in Boston, Massachusetts. The medical group on file is Massachusetts General Physicians Organization (MGPO). Dmand AI also links Dr. Ott to 1 more group practice or clinic and 1 medical group, each named with a free account.
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dmand AI tracks the EHR system at Dr. Harald C. Ott's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Ott practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| The General Hospital - Boston (Massachusetts General Hospital) | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Harald C. Ott is one of 732 general surgeons in Massachusetts
Surgery is Dr. Ott's primary specialty in the NPI Registry, under taxonomy code 208600000X. Dmand AI has Dr. Ott's licenses on file in 2 states: Massachusetts and New Hampshire.
Specialties and state licenses
- Surgery, MassachusettsPrimary
- Thoracic surgery (cardiothoracic vascular surgery), New Hampshire
General surgeons near Dr. Ott
Counts of general surgeons with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Harald C. Ott billed Medicare for 191 services in 2023
CMS data shows 191 Medicare services from Dr. Ott across 4 procedure codes in 2023. Medicare paid $14,480 for them. Every service was in an office.
Dr. Ott's Medicare services by type, 2022 to 2023
- 2022
- 2023
- Office and hospital visits
- 2022: 3122023: 19139%
- Surgery
- 2022: 282023: 0100%
Dr. Ott compared with the Massachusetts median for general surgeons, 2023
- Dr. Ott
- Massachusetts median
- Medicare services
- 191vs 200Close to median
Medians across 688 general surgeons in Massachusetts with Dmand AI profiles that report each measure.
Dr. Ott's most billed Medicare procedure codes, 2023
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
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Dr. Harald C. Ott received $5,579 in industry payments from 2016 to 2023
CMS Open Payments shows 5 general payments to Dr. Ott from 4 drug and device companies from 2016 to 2023. Consulting fees make up the largest share, 96% of the total. AstraZeneca Pharmaceuticals LP paid the most, $5,477. It also lists 1 research payment totaling $650 in 2018.
General payments to Dr. Ott by program year, 2016 to 2023
General payments to Dr. Ott by kind, 2016 to 2023
- Consulting fees$5,35396%
- Food and beverage$2264%
Companies that paid Dr. Ott the most, 2016 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Harald C. Ott's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Harald C. Ott
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Harald C. Ott's NPI number?
Dr. Harald C. Ott's NPI number is 1295862639. It was assigned on February 27, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Harald C. Ott?
Dr. Harald C. Ott is a general surgeon in Boston, Massachusetts. The primary specialty in the NPI Registry is Surgery Physician (taxonomy code 208600000X).
Where does Dr. Harald C. Ott practice?
Dr. Ott practices at Massachusetts General Hospital, Boston, MA 02114. Dr. Ott also practices at 55 Fruit St, Boston, MA 02114. Dr. Ott's primary practice is The General Hospital - Boston (Massachusetts General Hospital) in Boston, Massachusetts. Dmand AI also links Dr. Ott to 1 group practice or clinic and 1 medical group.
What is Dr. Harald C. Ott's office phone number?
The practice phone on file for Dr. Ott is (617) 724-9410.
What is Dr. Harald C. Ott's medical license number?
Dr. Ott holds Massachusetts license L-228287, one of the licenses on file in 2 states.
Which states has Dr. Harald C. Ott been licensed in?
Dmand AI has state licenses on file for Dr. Ott in Massachusetts and New Hampshire.
What medical group is Dr. Harald C. Ott part of?
Dr. Ott is linked to Massachusetts General Physicians Organization (MGPO). Dmand AI links Dr. Ott to 1 more medical group.
Does Dr. Harald C. Ott accept Medicare?
Yes. CMS data shows Dr. Ott billed Medicare for 191 services in 2023.
What services does Dr. Harald C. Ott bill to Medicare?
In 2023, Dr. Ott's most billed Medicare services were office visit, established patient (99213), care management and other visits (99443) and care management and other visits (99442).
Has Dr. Harald C. Ott received payments from drug or device companies?
CMS Open Payments shows $5,579 in general payments to Dr. Ott from 4 companies from 2016 to 2023. The largest total came from AstraZeneca Pharmaceuticals LP.
How long has Dr. Harald C. Ott been practicing?
Dr. Ott's NPI was assigned in 2007.
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