Quick answers
- Does Naum Spiegel accept Medicare assignment?
- Yes. Medicare's clinician data says Naum Spiegel 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 Naum Spiegel see?
- In 2024, CMS data shows 414 Original Medicare patients and 963 services for Naum Spiegel. This counts Original Medicare only and measures volume, not quality.
- What is Naum Spiegel's NPI number?
- 1710973623. 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 Naum Spiegel, 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 | 414 |
|---|---|
| Services billed to Medicare | 963 |
| Different services or procedures | 52 |
| 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)399 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)118 services
- Diagnostic exam of bladder and urethra using an endoscope (52000)75 services
- Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more (99212)64 services
- New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)53 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 blood pressure73%
- High cholesterol68%
- Arthritis33%
- Diabetes29%
- Atrial fibrillation21%
- Ischemic heart disease20%
Hospitals where Naum Spiegel works
Medicare's Facility Affiliation Data lists Naum Spiegel 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.
- Adventist Health ClearlakeClearlake, CA · Critical Access Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 051317
- Adventist Health Howard MemorialWillits, CA · Critical Access Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 051310
- Adventist Health Mendocino CoastFort Bragg, CA · Critical Access Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 051325
- Adventist Health Ukiah ValleyUkiah, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050301
- Sutter Lakeside HospitalLakeport, CA · Critical Access Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 051329
Practice locations
Addresses where Naum Spiegel is enrolled with Medicare (CMS data updated October 2, 2026).
- 275 Hospital DrUkiah, CA 95482 (707) 462‑3111
Group practices
Medicare enrollment lists Naum Spiegel as a member of this group (CMS data updated October 2, 2026).
- Ukiah Adventist Hospital135 clinicians in the group
Specialties
- Urologyprimary
Other urologists in California
Clinicians with the same Medicare primary specialty in California — not a recommendation.
Other clinicians in Ukiah Adventist Hospital
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1990 (36 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1710973623 |
| 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