Erik Rittenhouse Lacy, M.D
Emergency Medicine Physician · Modesto, CA
Erik Rittenhouse Lacy, M.D is an emergency medicine physician with a practice address in Modesto, California, and NPI 1801841077, issued on May 24, 2006. Check the license (California A83901, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Erik Rittenhouse Lacy
- Credential
- M.D
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License numbers
- A83901 CA
M2996 TX
Self-reported in NPPES; status is on the state search - Practice location
- 1441 Florida Avenue, Modesto, CA 95350
- Phone
- (209) 576-3609
- Enumerated
- May 24, 2006
- Record last updated
- Jun 23, 2020 (not updated in 6 years: call before relying on the address or phone)
- Medicaid ID
- 00A839010 CA
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 7,751 in California → Look up another NPI →
Also registered at 1441 Florida Avenue
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kellie Amador, M.S.NNurse Practitioner1164477683
- Robert Barandica, M.D.Emergency Medicine Physician1346295888
- Robert Donovan, M.DEmergency Medicine Physician1790730869
- Shannon Gillespie, P.A-CPhysician Assistant1063459683
- Nancy Howard, P.A-CPhysician Assistant1649225871
- Douglas Joe, M.DEmergency Medicine Physician1205873429
Verify Erik Rittenhouse Lacy in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A83901Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.5 times the Medicare Part D claims of the average emergency medicine physician in 2024
557 Medicare Part D claims for 372 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. Brand-name drugs were 4% of claims. 106 claims were for opioids.
Most prescribed
- Tramadol Hcl89 claims
- Levofloxacin41 claims
- Ondansetron Hcl40 claims
- Cephalexin38 claims
- Cyclobenzaprine Hcl36 claims
- Ibuprofen27 claims
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 practice group's MIPS final score for 2023 (Medicare payment program): 94.6 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Erik Rittenhouse Lacy among 7,751 emergency medicine physician records in California
Erik Rittenhouse Lacy, M.D is one of 7,751 emergency medicine physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 4% of them.
- NPI issued2006 · 4% of these records are older, 60% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileNo · 59% of these records are
- Record last updated2020 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Emergency Medicine Physician providers in California
There are 7,751 emergency medicine physician records in California.
All 7,751 in California → Every provider in Modesto → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Robert Barandica, M.D.Modesto, CA 953501346295888
- Ranti Bolaji, MDModesto, CA 953501417217993
- Dana Buchanan, D.OModesto, CA 953501174539423
- Phillip Chan, M.D.Modesto, CA 953501043576531
- Robert Donovan, M.DModesto, CA 953501790730869
- Joanna Dumont, D.OModesto, CA 953501699207696
- Sarah Dunn, M.D.Modesto, CA 953501215170956
- Asit Gokli, M.D.Modesto, CA 953501114942059
Common questions
What is Erik Rittenhouse Lacy, M.D's NPI number?
Erik Rittenhouse Lacy, M.D's National Provider Identifier (NPI) is 1801841077, issued on May 24, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Erik Rittenhouse Lacy, M.D located?
The NPPES record lists a practice address at 1441 Florida Avenue, Modesto, CA, 95350. Phone: (209) 576-3609. Providers update this record themselves, so call before visiting.
How can I verify Erik Rittenhouse Lacy, M.D's license?
NPPES lists California license number A83901, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Erik Rittenhouse Lacy, M.D prescribe under Medicare Part D?
In 2024, Erik Rittenhouse Lacy, M.D had 557 Medicare Part D claims for 372 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.
What is Erik Rittenhouse Lacy, M.D's MIPS final score?
The 2023 MIPS final score is 94.6 of 100, reported for the practice group. 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.