Organization Profile
Sierra Ambulatory Surgery Center
Unclaimed ProfileAt a glance
- 400 Sierra College Drive, Suite B, Grass Valley, CA 95945
About Sierra Ambulatory Surgery Center
Sierra Ambulatory Surgery Center is an organization based in Grass Valley, CA and listed in the NPI registry under ambulatory surgical center. According to Medicare claims data, the services billed most often include removal of cataract with insertion of prosthetic lens, removal of recurring cataract in lens capsule using a laser, and laser repair to improve eye fluid flow. The organization's National Provider Identifier (NPI) is 1043254063.
Factual summary compiled by Guide.md from public records; not written by this provider.
Practice Size
Counted from individual NPI records registered at the same street address; a shared building can inflate this.
Providers in This Building & Nearby
From registry street addresses: providers filed at this building, which can include unrelated practices sharing it.
- John E. Hagele, M.D. Ophthalmology
- Matthew Zealear, M.D. Ophthalmology
- Keith B. Mercer, M.D. Ophthalmology
- Lizabeth P. Thomas, OD Optometry
- Andrew P. Magan, CRNA Certified Registered Nurse Anesthetist (CRNA)
- Gregory J. Porter, M.D. Anesthesiology
- Kevin D. Woodburn, O.D. Optometry
- James Hagele, M.D. Optometrist
Specialty
Credentials & Licensing
About this hospital
Source: CMS Care Compare, Hospital General Information, checked 2026-09-10.
Most common inpatient stays (Medicare)
1,290 Medicare discharges across 40 diagnosis groups (2024). Groups with fewer than 11 discharges are not published by CMS.
| Diagnosis group | DRG | Discharges | Avg. Medicare payment |
|---|---|---|---|
| Septicemia Or Severe Sepsis Without Mv >96 Hours With Mcc | 871 | 318 | $18,043 |
| Heart Failure and Shock With Mcc | 291 | 89 | $11,639 |
| Pulmonary Edema and Respiratory Failure | 189 | 74 | $11,470 |
| Septicemia Or Severe Sepsis Without Mv >96 Hours Without Mcc | 872 | 61 | $8,947 |
| Simple Pneumonia and Pleurisy With Mcc | 193 | 55 | $11,872 |
| Respiratory Infections and Inflammations With Mcc | 177 | 42 | $15,099 |
| Renal Failure With Mcc | 682 | 40 | $13,740 |
| Other Kidney and Urinary Tract Diagnoses With Mcc | 698 | 33 | $15,496 |
| Intracranial Hemorrhage Or Cerebral Infarction With Cc Or Tpa in 24 Hours | 065 | 33 | $8,529 |
| Infectious and Parasitic Diseases With O.r. Procedures With Mcc | 853 | 29 | $43,791 |
Source: CMS Medicare Inpatient Hospitals by Provider and Service. Shows what the hospital admits Medicare patients for and what Medicare paid on average — not quality of care.
Contact Information
- (530) 272-3428
- Email not available
Practice Locations
400 SIERRA COLLEGE DRIVE SUITE B
Grass Valley, CA 95945
CMS Quality Rating
Sources
This rating is published by the Centers for Medicare & Medicaid Services (CMS) and is reproduced here unmodified.
Procedures Most Often Billed to Medicare
1,356 services · 863 patients · 11 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Removal of cataract with insertion of prosthetic lens | Procedure | 66984 |
796 |
| Removal of recurring cataract in lens capsule using a laser | Procedure | 66821 |
185 |
| Laser repair to improve eye fluid flow | Procedure | 65855 |
76 |
| Injection of lower or sacral spine facet joint using imaging guidance, single level | Procedure | 64493 |
71 |
| Extracapsular removal of cataract with insertion of artificial lens and insertion of drainage device in front chamber of eye | Procedure | 66991 |
66 |
| Injection of anesthetic and/or steroid drug into sacral spine nerve root using imaging guidance, single level | Procedure | 64483 |
49 |
| Complex removal of cataract with insertion of prosthetic lens | Procedure | 66982 |
45 |
| Removal of excessive skin and fat of upper eyelid | Procedure | 15823 |
24 |
| Destruction of lower or sacral spinal facet joint nerves using imaging guidance, single facet joint | Procedure | 64635 |
17 |
| Injection of upper or middle spine facet joint using imaging guidance, single level | Procedure | 64490 |
15 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Other ambulatory surgical centers in Grass Valley 3
Same specialty, same city.
Also performs Removal of cataract with insertion of prosthetic lens 8
Providers in CA who bill this service to Medicare most often.
Common questions
What does Sierra Ambulatory Surgery Center specialize in?
Sierra Ambulatory Surgery Center is an ambulatory surgical center in Grass Valley, CA. That is the designation recorded for this NPI in the federal registry.
NPI registry
Where is Sierra Ambulatory Surgery Center located?
Sierra Ambulatory Surgery Center is listed at 400 Sierra College Drive Suite B, Grass Valley, CA 95945. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Sierra Ambulatory Surgery Center's phone number?
The number on file is (530) 272-3428. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for Sierra Ambulatory Surgery Center?
Sierra Ambulatory Surgery Center's National Provider Identifier is 1043254063. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
What does Sierra Ambulatory Surgery Center do most often?
According to Medicare billing data, Sierra Ambulatory Surgery Center performs procedures including removal of cataract with insertion of prosthetic lens, removal of recurring cataract in lens capsule using a laser and laser repair to improve eye fluid flow. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Sierra Ambulatory Surgery Center's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Sierra Ambulatory Surgery Center. If this is you, claiming it is free.
Guide.md
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Manage this listing? Log in or create an account, then click “This is my practice and I manage it” here. A verified physician whose registry address matches this location is approved instantly; everyone else is reviewed by a person.
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