Primary practice
Find Dr. Tisdale'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. Tisdale practices at Lowell General Hospital in Lowell, Massachusetts, part of Tufts Medicine.
Dr. Tisdale's NPI, 1316920416, was assigned on November 22, 2005. Dr. Tisdale holds Massachusetts license 153488.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Tisdale's primary practice is Lowell General Hospital, at 295 Varnum Avenue, Lowell, MA 01854 in Middlesex County. The practice phone is (978) 937-6000.
Source: Dmand AI Affiliation Data
Dr. Tisdale's primary practice is Lowell General Hospital in Lowell, Massachusetts, part of Tufts Medicine. Dr. Tisdale is also affiliated with Lahey Clinic. The medical group on file is Harvard Medical Faculty Physicians at Beth Israel Deaconess Medical Center (HMFP). Dmand AI also links Dr. Tisdale to 3 more hospitals, 2 medical groups and 1 group practice or clinic, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Tisdale practices, 6 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Lowell General Hospital | Available with a free account |
| +5 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Hematology and oncology is Dr. Tisdale's primary specialty in the NPI Registry, under taxonomy code 207RH0003X. Dmand AI has Dr. Tisdale's licenses on file in 2 states: Massachusetts and New Hampshire.
Counts of hematologists and oncologists 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
CMS data shows 608 Medicare services from Dr. Tisdale across 6 procedure codes in 2024, for 307 Medicare patients. Medicare paid $44,697 for them. Every service was in a facility, such as a hospital, rather than an office.
Medians across 415 hematologists and oncologists in Massachusetts with Dmand AI profiles that report each measure.
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
CMS counts 307 Medicare patients who saw Dr. Tisdale in 2024. The largest group is 75 to 84, with 147 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 14% are also on Medicaid. Their average risk score is 1.82, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Tisdale's median patient age at 74, with 54% women.
Share of Medicare patients with each condition. A patient can have several.
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Median age 74
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
In 2024, Dr. Tisdale wrote 360 Medicare Part D claims for 140 patients. 81% of them were for generic drugs. CMS names the drug for 160 of them, across 6 drugs with 11 or more claims each, at $193,985 in total drug cost. In 2023, CMS named 235 claims across 13 drugs.
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Drugs named by CMS: 6 in 2024, 13 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Tisdale accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Tisdale as offering telehealth.
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dmand AI links Dr. Tisdale to 1 clinical trial. 1 is still active or recruiting. Conditions studied include Breast Neoplasms and Breast Diseases.
Conditions in Dr. Tisdale's trials
Sources: ClinicalTrials.gov (National Library of Medicine); and Dmand AI Research Linkage
CMS Open Payments shows 27 general payments to Dr. Tisdale from 10 drug and device companies from 2016 to 2023. Consulting fees make up the largest share, 79% of the total. Gilead Sciences, Inc. paid the most, $4,386.
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
| 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 | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| 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 |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Clinical trials and co-investigators | ClinicalTrials.gov (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| 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
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Dr. Douglas D. Tisdale's NPI number is 1316920416. It was assigned on November 22, 2005, and it is active in the NPI Registry.
Dr. Douglas D. Tisdale is a hematologist and oncologist in Lowell, Massachusetts. The primary specialty in the NPI Registry is Hematology & Oncology Physician (taxonomy code 207RH0003X).
Dr. Tisdale practices at 295 Varnum Avenue, Lowell, MA 01854. Dr. Tisdale's primary practice is Lowell General Hospital in Lowell, Massachusetts, part of Tufts Medicine. Dmand AI also links Dr. Tisdale to 3 hospitals, 2 medical groups and 1 group practice or clinic.
The practice phone on file for Dr. Tisdale is (978) 937-6000.
Dr. Tisdale holds Massachusetts license 153488, one of the licenses on file in 2 states.
Dmand AI has state licenses on file for Dr. Tisdale in Massachusetts and New Hampshire.
Dr. Tisdale practices at Lowell General Hospital in Lowell, Massachusetts. Dr. Tisdale is also affiliated with Lahey Clinic. Dmand AI links Dr. Tisdale to 3 more hospitals.
Dr. Tisdale is linked to Harvard Medical Faculty Physicians at Beth Israel Deaconess Medical Center (HMFP). Dmand AI links Dr. Tisdale to 2 more medical groups.
Yes. CMS data shows Dr. Tisdale billed Medicare for 608 services in 2024, and Dr. Tisdale accepts Medicare assignment.
Yes. The CMS Doctors and Clinicians file lists Dr. Tisdale as offering telehealth services.
CMS counts 307 Medicare patients who saw Dr. Tisdale in 2024, with an average age of 76.
In 2024, Dr. Tisdale's most billed Medicare services were office visit, established patient (99214), office visit, established patient (99213) and office visit, new patient (99204).
In 2024 Medicare Part D data, Dr. Tisdale's most prescribed drugs by claims were Anastrozole, Hydroxyurea and Exemestane.
CMS Open Payments shows $4,738 in general payments to Dr. Tisdale from 10 companies from 2016 to 2023. The largest total came from Gilead Sciences, Inc.
Dr. Tisdale graduated from medical school in 1986, 40 years ago.
Dr. Tisdale has worked on 1 clinical trial.
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