NPPES file of Aug 9, 2026

Lara Chamberlain Atwater, M.D.

Orthopaedic Foot and Ankle Surgery Physician · Portland, OR

Lara Chamberlain Atwater, M.D. is an orthopaedic foot and ankle surgery physician with a practice address in Portland, Oregon, and NPI 1366718116, issued on Mar 27, 2012. Check the license (Oregon MD192938, as entered in NPPES) on the Oregon Medical Board; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1366718116
Name
Lara Chamberlain Atwater
Credential
M.D.
Primary taxonomy
Orthopaedic Foot and Ankle Surgery Physician 207XX0004X
License numbers
MD192938 OR
D0085556 MD
Self-reported in NPPES; status is on the state search
Practice location
3181 SW Sam Jackson Park RD # OP31, Portland, OR 97239
Phone
(808) 391-4667
Enumerated
Mar 27, 2012
Record last updated
Nov 12, 2019 (not updated in 7 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20190918000759); accepts Medicare assignment
Medical or professional school
Georgetown University School Of Medicine, 2012
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 3181 SW Sam Jackson Park RD # OP31

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Nathan Fennewald, PA-CPhysician Assistant1386004521
  2. Shannon Goddard, PAMedical Physician Assistant1780961417
  3. Jonathan Kark, MDOrthopaedic Surgery of the Spine Physician1902225386
  4. Clifford Lin, BSC, MD, MASC, FRCSCOrthopaedic Surgery of the Spine Physician1558748210
  5. Sourabh Mukherjee, MDOrthopaedic Surgery of the Spine Physician1588003677

Verify Lara Chamberlain Atwater in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersOregon Medical Board
    Search for license MD192938
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Oregon license search

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80% fewer Medicare Part D claims than the average orthopaedic foot and ankle surgery physician in 2024

45 Medicare Part D claims for 27 beneficiaries, against an average of 225 among the 648 providers of this specialty who prescribed in Part D. 13 claims were for opioids.

  1. Lara Atwater45
  2. Specialty average225

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

The MIPS final score for 2023 (Medicare payment program): 97.8 of 100

The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.

  1. Qualityout of 100 · 30% of the final score81.0
  2. Costnot scored (reweighted)
  3. Promoting interoperabilityout of 100 · 25%100.0
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).

Industry payments in 2024: $1,944.57

16 payments; by number, the most common kind was food and beverage; the largest payer was Stryker Corporation. The 643 providers of this specialty with any payment received $23,314.63 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Lara Atwater$1,945
  2. Specialty average$23,315

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through 2 group practices

  1. Tuality Medical Group LLCHillsboro, OR
  2. University Professional ServicesPortland, OR

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Orthopaedic Foot and Ankle Surgery Physician providers in Oregon

There are 18 orthopaedic foot and ankle surgery physician records in Oregon.

Other orthopaedic foot and ankle surgery physician records in Oregon

  1. Adam Baker, M.D.Portland, OR1558533273
  2. Gillian Bayley, M.D.Klamath Falls, OR1902258080
  3. Grant Branam, DOBend, OR1982097705
  4. Justin Brohard, DOSalem, OR1588012900
  5. Christopher Cychosz, MDEugene, OR1801322953
  6. James Davitt, MDPortland, OR1255374740
  7. Kevin Driscoll, DPMPortland, OR1699272724
  8. Anthony HinzBend, OR1336146208
  9. Jeffrey Holmboe, M.D.Bend, OR1770581415
  10. Lyle Jackson, M.D.Eugene, OR1144540790

Common questions

What is Lara Chamberlain Atwater, M.D.'s NPI number?

Lara Chamberlain Atwater, M.D.'s National Provider Identifier (NPI) is 1366718116, issued on Mar 27, 2012. An NPI identifies a provider in billing; it is not a license.

Where is Lara Chamberlain Atwater, M.D. located?

The NPPES record lists a practice address at 3181 SW Sam Jackson Park RD # OP31, Portland, OR, 97239. Phone: (808) 391-4667. Providers update this record themselves, so call before visiting.

How can I verify Lara Chamberlain Atwater, M.D.'s license?

NPPES lists Oregon license number MD192938, as entered by the provider. Search the Oregon Medical Board at https://www.oregon.gov/OMB/Pages/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Lara Chamberlain Atwater, M.D. prescribe under Medicare Part D?

In 2024, Lara Chamberlain Atwater, M.D. had 45 Medicare Part D claims for 27 beneficiaries; the average among orthopaedic foot and ankle surgery physician prescribers was 225. Part D covers Medicare prescriptions only.

What is Lara Chamberlain Atwater, M.D.'s MIPS final score?

The 2023 MIPS final score is 97.8 of 100. The average among 454,083 clinicians with a measured score was 83.5.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.