Dr. Gregory Albert Lammert, MD
- Medicare services, 2024
- 235
- Medicare patients, 2024
- 213
- Part D claims, 2024
- 112
- Hospital affiliations
- 1
- Industry payments
- $15,855
- Practice address
- 1201 S Miller Street, Wenatchee, WA 98807
- Practice phone
- Call (509) 662-1511
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find Dr. Lammert's professional email, personal email and mobile number
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Dr. Gregory Albert Lammert is a general surgeon in Wenatchee, Washington
Dr. Lammert practices at Confluence Health Hospital | Central Campus in Wenatchee, Washington, part of Confluence Health.
Dr. Lammert's NPI, 1215279252, was assigned on March 16, 2013. Dr. Lammert graduated from Loma Linda University School of Medicine in 2013. Dr. Lammert holds Washington license MD60753225.
- NPI
- 1215279252NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1759609530
- NPI enumeration date
- March 16, 2013
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (509) 662-1511
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 39
- Medical school graduation
- 2013
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Gregory Albert Lammert practices at Confluence Health Hospital | Central Campus in Wenatchee, Washington
Dr. Lammert's primary practice is Confluence Health Hospital | Central Campus, at 1201 S Miller Street, Wenatchee, WA 98807 in Chelan County. The practice phone is (509) 662-1511.
- Confluence Health Hospital | Central Campus1201 S Miller Street, Wenatchee, WA 98807 · Chelan CountyPhone(509) 662-1511
Source: Dmand AI Affiliation Data
Dr. Gregory Albert Lammert is affiliated with 1 site of care and 2 medical groups
Dr. Lammert's primary practice is Confluence Health Hospital | Central Campus in Wenatchee, Washington, part of Confluence Health. The medical group on file is Confluence Health. Dmand AI also links Dr. Lammert to 1 more medical group, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Gregory Albert Lammert's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Lammert practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Confluence Health Hospital | Central Campus | Available with a free account |
| +1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Gregory Albert Lammert is one of 642 general surgeons in Washington
Surgery is Dr. Lammert's primary specialty in the NPI Registry, under taxonomy code 208600000X. Dr. Lammert is licensed in Washington.
Specialties and state licenses
- Surgery, WashingtonPrimary
General surgeons near Dr. Lammert
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. Gregory Albert Lammert billed Medicare for 235 services in 2024
CMS data shows 235 Medicare services from Dr. Lammert across 9 procedure codes in 2024, for 213 Medicare patients. Medicare paid $24,465 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Lammert's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1732024: 1804%
- Surgery
- 2023: 482024: 5515%
Dr. Lammert compared with the Washington median for general surgeons, 2024
- Dr. Lammert
- Washington median
- Medicare services
- 235vs 922.6 times
- Medicare patients
- 213vs 882.4 times
- Part D claims
- 74vs 332.2 times
Medians across 610 general surgeons in Washington with Dmand AI profiles that report each measure.
Dr. Lammert's most billed Medicare procedure codes, 2024
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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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Lammert and other general surgeons in Washington.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Gregory Albert Lammert treated 213 Medicare patients in 2024, average age 74
CMS counts 213 Medicare patients who saw Dr. Lammert in 2024. The largest group is 65 to 74, with 95 patients. 73% of them have high blood pressure, and 62% have high cholesterol. 19% are also on Medicaid. Their average risk score is 1.53, 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. Lammert's median patient age at 58, with 54% women.
Dr. Lammert's Medicare patients by age, 2024
Dr. Lammert's Medicare patients by sex, 2024
- Women11654%
- Men9746%
Chronic conditions among Dr. Lammert's Medicare patients, 2024
- High blood pressure73%
- High cholesterol62%
- Arthritis35%
- Cancer32%
- Mood disorders31%
- Chronic kidney disease28%
- Depression28%
- Diabetes28%
Share of Medicare patients with each condition. A patient can have several.
Dr. Lammert's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 58
Patient panel by sex, all payers
- Women54%
- Men46%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Gregory Albert Lammert wrote 112 Medicare Part D claims in 2024
In 2024, Dr. Lammert wrote 112 Medicare Part D claims for 78 patients. 99% of them were for generic drugs. CMS names the drug for 74 of them, across 2 drugs with 11 or more claims each, at $146 in total drug cost. In 2023, CMS named 73 claims across 1 drug.
Dr. Lammert's Part D claims by kind of drug, 2024
- Generic111 claims99%
- Brand-name and other1 claims1%
Dr. Lammert's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Lammert's Part D claims, 2024
- Opioids57%64 of 112 claims
- Antibiotics18%20 of 112 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 732024: 741%
Drugs named by CMS: 2 in 2024, 1 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. Gregory Albert Lammert ranks in the 72nd percentile for hernia repair (minimally invasive) in Medicare
Dr. Lammert accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Lammert as offering telehealth. CMS counts 11 procedures of hernia repair (minimally invasive) by Dr. Lammert, more than 72% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Where Dr. Lammert ranks in Medicare procedure volume
- Hernia repair (minimally invasive)
- 72nd percentile11 procedures
- Mastectomy
- 64th percentile11 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Colonoscopy: 1 to 10 procedures (CMS shows small counts as a range)
Hernia repair - groin (open): 1 to 10 procedures (CMS shows small counts as a range)
Melanoma (skin cancer) excision: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Gregory Albert Lammert received $15,855 in industry payments from 2016 to 2025
CMS Open Payments shows 59 general payments to Dr. Lammert from 7 drug and device companies from 2016 to 2025. Education make up the largest share, 55% of the total. Intuitive Surgical, Inc. paid the most, $15,363.
General payments to Dr. Lammert by program year, 2016 to 2025
General payments to Dr. Lammert by kind, 2016 to 2025
- Education$8,64655%
- Travel and lodging$5,18233%
- Food and beverage$2,01713%
- Gifts$90%
Companies that paid Dr. Lammert the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Gregory Albert Lammert graduated from Loma Linda University School of Medicine
Dr. Lammert graduated from Loma Linda University School of Medicine in 2013.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Gregory Albert Lammert'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 | 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)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| 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. Gregory Albert Lammert
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. Gregory Albert Lammert's NPI number?
Dr. Gregory Albert Lammert's NPI number is 1215279252. It was assigned on March 16, 2013, and it is active in the NPI Registry.
What kind of doctor is Dr. Gregory Albert Lammert?
Dr. Gregory Albert Lammert is a general surgeon in Wenatchee, Washington. The primary specialty in the NPI Registry is Surgery Physician (taxonomy code 208600000X).
Where does Dr. Gregory Albert Lammert practice?
Dr. Lammert practices at 1201 S Miller Street, Wenatchee, WA 98807. Dr. Lammert's primary practice is Confluence Health Hospital | Central Campus in Wenatchee, Washington, part of Confluence Health. Dmand AI also links Dr. Lammert to 1 medical group.
What is Dr. Gregory Albert Lammert's office phone number?
The practice phone on file for Dr. Lammert is (509) 662-1511.
What is Dr. Gregory Albert Lammert's medical license number?
Dr. Lammert holds Washington license MD60753225.
Which hospitals is Dr. Gregory Albert Lammert affiliated with?
Dr. Lammert practices at Confluence Health Hospital | Central Campus in Wenatchee, Washington.
What medical group is Dr. Gregory Albert Lammert part of?
Dr. Lammert is linked to Confluence Health. Dmand AI links Dr. Lammert to 1 more medical group.
Does Dr. Gregory Albert Lammert accept Medicare?
Yes. CMS data shows Dr. Lammert billed Medicare for 235 services in 2024, and Dr. Lammert accepts Medicare assignment.
Does Dr. Gregory Albert Lammert offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Lammert as offering telehealth services.
How many Medicare patients does Dr. Gregory Albert Lammert see?
CMS counts 213 Medicare patients who saw Dr. Lammert in 2024, with an average age of 74.
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What services does Dr. Gregory Albert Lammert bill to Medicare?
In 2024, Dr. Lammert's most billed Medicare services were office visit, new patient (99204), office visit, established patient (99214) and office visit, established patient (99213).
Where did Dr. Gregory Albert Lammert go to medical school?
Dr. Lammert graduated from Loma Linda University School of Medicine in 2013.
What drugs does Dr. Gregory Albert Lammert prescribe most?
In 2024 Medicare Part D data, Dr. Lammert's most prescribed drugs by claims were Oxycodone HCl and Ondansetron ODT.
Has Dr. Gregory Albert Lammert received payments from drug or device companies?
CMS Open Payments shows $15,855 in general payments to Dr. Lammert from 7 companies from 2016 to 2025. The largest total came from Intuitive Surgical, Inc.
How long has Dr. Gregory Albert Lammert been practicing?
Dr. Lammert graduated from medical school in 2013, 13 years ago.
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