Loren Nathan Bach, M.D.
Surgery Physician · Saint Louis, MO
Loren Nathan Bach, M.D. is a surgery physician with a practice address in Saint Louis, Missouri, and NPI 1205279650, issued on Apr 15, 2013. Check the license (Missouri 2019029089, as entered in NPPES) on the Missouri Board of Registration for the Healing Arts; the Medicare figures below come from public CMS files.
- Name
- Loren Nathan Bach
- Credential
- M.D.
- Primary taxonomy
- Surgery Physician 208600000X
- License numbers
- 2019029089 MO
59069 MN
Self-reported in NPPES; status is on the state search - Practice location
- 621 S New Ballas RD Ste 560A, Saint Louis, MO 63141
- Phone
- (314) 251-6440
- Enumerated
- Apr 15, 2013
- Record last updated
- May 30, 2023
- Fax
- (314) 251-4456
- Medicare enrollment
- Enrolled (PECOS I20190906002664); accepts Medicare assignment
- Medical or professional school
- University Of Minnesota Medical School, 2013
- Entity
- Type 1 · individual
8 nearest surgery physician records → All 714 in Missouri → Look up another NPI →
Also registered at 621 S New Ballas RD Ste 560A
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Mary Bordner, ACNPAcute Care Nurse Practitioner1437526126
- Ea-Sle Chang, M.D.Surgery Physician1932582061
- Rachel Cohen, DOTrauma Surgery Physician1700443967
- Maria Colletta, MSN, AGACNP-BCAcute Care Nurse Practitioner1780418707
- Gina Davis, DOSurgery Physician1669865861
- William Forness, FNP-CFamily Medicine Physician1386237097
Verify Loren Nathan Bach in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMissouri Board of Registration for the Healing Arts
Search for license 2019029089Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
58% fewer Medicare Part D claims than the average surgery physician in 2024
62 Medicare Part D claims for 49 beneficiaries, against an average of 147 among the 20,115 providers of this specialty who prescribed in Part D. 43 claims were for opioids.
Most prescribed
- Oxycodone Hcl25 claims
- Hydrocodone-Acetaminophen12 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.
Industry payments in 2024: $1,039.69
9 payments; by number, the most common kind was food and beverage; the largest payer was Zimmer Biomet Holdings, Inc. The 17,103 providers of this specialty with any payment received $3,513.80 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
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
- Elite Physical Therapy OF Creve Coeur LLCCreve Coeur, MO
- Mercy Clinic Trauma And General Surgery LLCSaint Louis, MO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Loren Nathan Bach among 714 surgery physician records in Missouri
Loren Nathan Bach, M.D. is one of 714 surgery physician records with a practice address in Missouri. 78% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2013, is newer than 59% of them.
- NPI issued2013 · 59% of these records are older, 39% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 57% of these records are
- Graduated2013 · median 2006 among the 410 with a school on file
- Record last updated2023 · 49% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208600000X and a Missouri practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Surgery Physician providers in Missouri
There are 714 surgery physician records in Missouri.
All 714 in Missouri → Every provider in Saint Louis → Surgery Physician nationwide →
The 8 surgery physician records with the nearest ZIP codes
- John Eagon, MDSaint Louis, MO 631411801814538
- Alison Gildehaus, M.D.Saint Louis, MO 631411104023886
- Omar Guerra, MDSaint Louis, MO 631411952337222
- Todd Howard, M.D.Saint Louis, MO 631411154351765
- Lindy Hruska, M.D.Saint Louis, MO 631411174510473
- Samuel Marquez, M.D.St Louis, MO 631411750380846
- Thao Marquez, MD,MSCreve Coeur, MO 631411275696866
- Nicole Martinez, M.D.Creve Coeur, MO 631411780894113
Common questions
What is Loren Nathan Bach, M.D.'s NPI number?
Loren Nathan Bach, M.D.'s National Provider Identifier (NPI) is 1205279650, issued on Apr 15, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Loren Nathan Bach, M.D. located?
The NPPES record lists a practice address at 621 S New Ballas RD Ste 560A, Saint Louis, MO, 63141. Phone: (314) 251-6440. Providers update this record themselves, so call before visiting.
How can I verify Loren Nathan Bach, M.D.'s license?
NPPES lists Missouri license number 2019029089, as entered by the provider. Search the Missouri Board of Registration for the Healing Arts at https://www.fsmb.org/contact-a-state-medical-board/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Loren Nathan Bach, M.D. prescribe under Medicare Part D?
In 2024, Loren Nathan Bach, M.D. had 62 Medicare Part D claims for 49 beneficiaries; the average among surgery physician prescribers was 147. Part D covers Medicare prescriptions only.
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.