Quick answers
- Does Joseph R. Lach Jr. accept Medicare assignment?
- Yes. Medicare's clinician data says Joseph R. Lach Jr. accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Joseph R. Lach Jr. see?
- In 2024, CMS data shows 208 Original Medicare patients and 459 services for Joseph R. Lach Jr.. This counts Original Medicare only and measures volume, not quality.
- What is Joseph R. Lach Jr.'s NPI number?
- 1285405514. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Joseph R. Lach Jr., data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 208 |
|---|---|
| Services billed to Medicare | 459 |
| Different services or procedures | 37 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)136 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)67 services
- Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)49 services
- Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)26 services
- Insertion of needle into vein for collection of blood sample (36415)21 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High cholesterol72%
- High blood pressure67%
- Arthritis47%
- Anxiety24%
- Ischemic heart disease22%
- Chronic kidney disease22%
Hospitals where Joseph R. Lach Jr. works
Medicare's Facility Affiliation Data lists Joseph R. Lach Jr. at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Flagstaff Medical CenterFlagstaff, AZ · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 030023
- Verde Valley Medical CenterCottonwood, AZ · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 030007
Practice locations
Addresses where Joseph R. Lach Jr. is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 7; the Medicare profile lists all.
- 1200 N Beaver StFlagstaff, AZ 86001 (928) 779‑3366
- 1200 N Beaver St, Attn. Managed Care ContractingFlagstaff, AZ 86001
- 1215 N Beaver St, Suite 203Flagstaff, AZ 86001 (928) 773‑2249
- 1895 N Jasper DrFlagstaff, AZ 86001
- 1895 N Jasper Dr, Suite 3Flagstaff, AZ 86001 (928) 913‑8800
Group practices
Medicare enrollment lists Joseph R. Lach Jr. as a member of these groups (CMS data updated October 2, 2026).
- Northern Arizona Healthcare Corporation385 clinicians in the group
- Urgent Care Northern Arizona Healthcare LLC12 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Flagstaff
Clinicians with the same Medicare primary specialty in Flagstaff, AZ — not a recommendation.
Other clinicians in Northern Arizona Healthcare Corporation
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | NP |
|---|---|
| Graduation year | 2023 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1285405514 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians