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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. DONALD A. RAMBERG M.D.
NPI 1124093000
Neurological Surgery in San Luis Obispo, CA

Active since February 22, 2006PECOS EnrolledAccepts Medicare Assignment
628 CALIFORNIA BLVD STE D1, SAN LUIS OBISPO, CA 93401(805) 543-6710(805) 543-8298 Get Directions Write a Review

NPPES record last updated: October 13, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Dr. Donald A. Ramberg M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. DONALD A. RAMBERG M.D. (NPI 1124093000) is an individual neurological surgery provider in San Luis Obispo, California, licensed in California (G56939) and active in the NPI registry since February 2006. He is enrolled in Medicare PECOS and is a graduate of Oregon Health Sciences University School Of Medicine (1978).

NPPES Registry Identity

NPI1124093000
Entity TypeIndividualMale
Primary Taxonomy207T00000X
Provider Legal NameDR. DONALD A. RAMBERGCredential: M.D.
Location Address628 CALIFORNIA BLVD STE D1San Luis Obispo, CA 93401-2559
Mailing Address628 California Blvd Ste D1San Luis Obispo, CA 93401-2559 · (805) 543-6710 · Fax (805) 543-8298
Phone(805) 543-6710
Fax(805) 543-8298
Sole ProprietorYes
Medical School CMSOregon Health Sciences University School Of MedicineGraduated 1978
Enumeration DateFebruary 22, 2006
Last NPPES UpdateOctober 13, 2026
NPPES CertifiedOctober 13, 2026
✔ NPI 1124093000 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNeurological SurgeryAllopathic & Osteopathic Physicians
Taxonomy Code207T00000X
License✔ Licensed in CA · G56939
Definition
A neurological surgeon provides the operative and non-operative management (i.e., prevention, diagnosis, evaluation, treatment, critical care, and rehabilitation) of disorders of the central, peripheral, and autonomic nervous systems, including their supporting structures and vascular supply; the evaluation and treatment of pathological processes which modify function or activity of the nervous system; and the operative and non-operative management of pain. A neurological surgeon treats patients with disorders of the nervous system; disorders of the brain, meninges, skull, and their blood supply, including the extracranial carotid and vertebral arteries; disorders of the pituitary gland; disorders of the spinal cord, meninges, and vertebral column, including those which may require treatment by spinal fusion or instrumentation; and disorders of the cranial and spinal nerves throughout their distribution.
628 CALIFORNIA BLVD STE D1, San Luis Obispo, CA 93401
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Other Identifiers 4

Other184194600CA · Dept Of Labor
OtherG56939CA · Blue Cross
Medicaid00G569390CA
Other00G569390CA · Blue Shield

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Donald A. Ramberg M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID8921002759
PECOS Enrollment IDI20060908000188
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Donald Ramberg reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Donald A. Ramberg M.D., Inc.
0.1 mi
Neurological Surgery
699 CALIFORNIA BLVD STE B
San Luis Obispo, CA 93401
  • Reassigned Medicare billing, California enrollment
  • Medicare enrollment name: Donald A. Ramberg MD Inc
NPI 1184923245 (805) 543-6710

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 6

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
122 services76 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233
Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.
37 services12 patients
New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203
This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.
36 services36 patients
Telephone medical discussion with physician, 11-20 minutes 99442
This is a service where you have a phone conversation with your doctor for 11-20 minutes. It's used for discussing health concerns, reviewing test results, or managing ongoing conditions. It's a convenient way to receive medical advice without an in-person visit.
26 services17 patients
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223
Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.
23 services23 patients
Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more 99212
This is a routine check-up for patients who have previously seen the doctor. During this 10-19 minute visit, the doctor will review your health status, discuss any concerns, and manage ongoing treatments or medications. It's a chance to ensure your health is on track.
15 services14 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 93401 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$135.73 typical visit price
range $59.84 – $178.89
Typical copayment $33.93 (range $14.96 – $44.72)
Most-billed visit code 99204
Established Patient
$74.24 typical visit price
range $19.70 – $146.55
Typical copayment $18.56 (range $4.92 – $36.63)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

Reported Quality Measures

e-Prescribing
At least one permissible prescription written by the MIPS eligible clinician is queried for a drug formulary and transmitted electronically using certified EHR technology.
96%180 patients4/55-star benchmark: 99%
Health Information Exchange
The MIPS eligible clinician that transitions or refers their patient to another setting of care or health care clinician (1) uses CEHRT to create a summary of care record; and (2) electronically transmits such summary to a receiving health care clinician for…
32%322 patients2/55-star benchmark: 88%
Medication Reconciliation
The MIPS eligible clinician performs medication reconciliation for at least one transition of care in which the patient is transitioned into the care of the MIPS eligible clinician.
76%221 patients1/55-star benchmark: 100%
Patient-Specific Education
The MIPS eligible clinician must use clinically relevant information from CEHRT to identify patient-specific educational resources and provide access to those materials to at least one unique patient seen by the MIPS eligible clinician.
14%538 patients1/55-star benchmark: 97%
Preventive Care and Screening: Body Mass Index (BMI) Screening and Follow-Up Plan
Percentage of patients aged 18 years and older with a BMI documented during the current encounter or during the previous twelve months AND with a BMI outside of normal parameters, a follow-up plan is documented during the encounter or during the previous…
23%498 patients1/55-star benchmark: 97%
Provide Patient Access
At least one patient seen by the MIPS eligible clinician during the performance period is provided timely access to view online, download, and transmit to a third party their health information subject to the MIPS eligible clinician's discretion to withhold…
62%538 patients3/55-star benchmark: 100%
Secure Messaging
For at least one unique patient seen by the MIPS eligible clinician during the performance period, a secure message was sent using the electronic messaging function of CEHRT to the patient (or the patient-authorized representative), or in response to a secure…
8%538 patients1/55-star benchmark: 89%
View, Download, or Transmit (VDT)
At least one patient seen by the MIPS eligible clinician during the performance period (or patient-authorized representative) views, downloads or transmits their health information to a third party during the performance period.
28%538 patients
Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Donald Ramberg's NPI number?

The NPI number for Donald Ramberg is 1124093000. It was assigned to this individual provider in the NPPES registry on February 22, 2006.

Where is Donald Ramberg located?

Donald Ramberg practices at 628 California Blvd Ste D1, San Luis Obispo, CA 93401. The listed phone number is (805) 543-6710.

What is Donald Ramberg's specialty?

The primary specialty registered for this NPI is Neurological Surgery with taxonomy code 207T00000X.

Is Donald Ramberg enrolled in Medicare?

Yes. Donald Ramberg is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organization bills Medicare for Donald Ramberg's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Donald Ramberg reassigns Medicare benefits to Donald A. Ramberg M.D., Inc. (San Luis Obispo, CA). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Donald Ramberg's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Donald Ramberg was last updated on October 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.