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Romerson Del Rosario Dimla, MD

Anesthesiology · Concord

NPI 1962862052

Medicare standing
Clear
Enrolled, allowed to bill and order, not excluded
Plans that list them
Not verified
Not the same as out of network.
Offices
5

Offices

5 locations · Cep America - Anesthesia PC · G2 Anesthesia PC · John Muir Trauma Physicians Billing Service

Looking this up.

Hospitals listed: John Muir Medical Center - Walnut Creek Campus. That is not proof they admit you there this week.

Plan participation

Not verified

We could not verify current plan participation for this doctor. This does not mean they are out of network. Call Dr. Dimla’s office to ask if they take your plan before you enroll.

California Medical Board record

Licence A141073 · Current

Licensed to practise in California · since 2016 · expires 2028-03-31 · Tulane University School of Medicine.

Matched on the licence number without its letter prefix; check the name before relying on it.

No disciplinary actions, convictions, malpractice judgments or citations in this record.

Hospitals they work in

1 hospital

These rate the hospital, not this clinician. Most measures at most hospitals are no different from the national rate.

  • John Muir Medical Center - Walnut Creek CampusWalnut Creek, CAAcute Care Hospital · Voluntary non-profit - Other · Has an emergency department · Birthing-friendlyPart of John Muir Health, which runs 3 hospitalsPatients rate it 3 of 5 · 77% would definitely recommend it
    Overall rating: 2 of 5 starsWorse than the national rate — Abdominopelvic accidental puncture or laceration rate: 2.01 (1.17 to 2.85) · 2,206 cases, Jul 2022 – Jun 2024Worse than the national rate — Death rate among surgical inpatients with serious treatable complications: 222.42 (177.82 to 267.02) · 120 cases, Jul 2022 – Jun 2024Worse than the national rate — Pressure ulcer rate: 1.4 (0.91 to 1.9) · 9,764 cases, Jul 2022 – Jun 2024Worse than the national rate — SSI - Colon Surgery: 2.734, Oct 2024 – Sep 2025Better than the national rate — Catheter Associated Urinary Tract Infections (ICU + select Wards): 0.536, Oct 2024 – Sep 2025Better than the national rate — Central Line Associated Bloodstream Infection (ICU + select Wards): 0.341, Oct 2024 – Sep 2025Better than the national rate — Clostridium Difficile (C.Diff): 0.455, Oct 2024 – Sep 2025Better than the national rate — MRSA Bacteremia: 0.245, Oct 2024 – Sep 2025
See every measure and the patient survey for John Muir Medical Center - Walnut Creek Campus

Behind the star rating — Deaths: 3 better, 2 the same, 2 worse of 7 measures. Safety: 2 better, 5 the same, 1 worse of 8 measures. Readmissions: 3 better, 5 the same, 2 worse of 10 measures. The star rating is worked out from an earlier period than the measures below, so the two can disagree.

Every scored measure at John Muir Medical Center - Walnut Creek Campus
Abdominopelvic accidental puncture or laceration rateComplications and deaths2.01 (1.17 to 2.85) · 2,206 casesWorseJul 2022 – Jun 2024
Death rate among surgical inpatients with serious treatable complicationsComplications and deaths222.42 (177.82 to 267.02) · 120 casesWorseJul 2022 – Jun 2024
Pressure ulcer rateComplications and deaths1.4 (0.91 to 1.9) · 9,764 casesWorseJul 2022 – Jun 2024
SSI - Colon SurgeryInfections2.734WorseOct 2024 – Sep 2025
Catheter Associated Urinary Tract Infections (ICU + select Wards)Infections0.536BetterOct 2024 – Sep 2025
Central Line Associated Bloodstream Infection (ICU + select Wards)Infections0.341BetterOct 2024 – Sep 2025
Clostridium Difficile (C.Diff)Infections0.455BetterOct 2024 – Sep 2025
MRSA BacteremiaInfections0.245BetterOct 2024 – Sep 2025
CMS Medicare PSI 90: Patient safety and adverse events compositeComplications and deaths1.14 (0.87 to 1.4)No differentJul 2022 – Jun 2024
Death rate for COPD patientsComplications and deaths6.4 · 131 casesNoneJul 2022 – Jun 2025
Death rate for heart attack patientsComplications and deaths10 · 148 casesNoneJul 2022 – Jun 2025
Death rate for heart failure patientsComplications and deaths9.8 · 695 casesNoneJul 2022 – Jun 2025
Death rate for pneumonia patientsComplications and deaths12.5 · 827 casesNoneJul 2022 – Jun 2025
Death rate for stroke patientsComplications and deaths14.1 · 509 casesNoneJul 2023 – Jun 2025
Hybrid Hospital-Wide All-Cause Risk Standardized Mortality RateComplications and deaths3.4 · 4,483 casesNoneJul 2024 – Jun 2025
Iatrogenic pneumothorax rateComplications and deaths0.35 (0.18 to 0.53) · 11,630 casesNo differentJul 2022 – Jun 2024
In-hospital fall-associated fracture rateComplications and deaths0.22 (0.05 to 0.39) · 11,793 casesNo differentJul 2022 – Jun 2024
Perioperative pulmonary embolism or deep vein thrombosis rateComplications and deaths3.33 (1.69 to 4.96) · 3,268 casesNo differentJul 2022 – Jun 2024
Postoperative acute kidney injury requiring dialysis rateComplications and deaths1.37 (0 to 2.94) · 1,631 casesNo differentJul 2022 – Jun 2024
Postoperative hemorrhage or hematoma rateComplications and deaths2.76 (1.43 to 4.09) · 3,066 casesNo differentJul 2022 – Jun 2024
Postoperative respiratory failure rateComplications and deaths6.12 (0.22 to 12.02) · 1,580 casesNo differentJul 2022 – Jun 2024
Postoperative sepsis rateComplications and deaths4.43 (1.21 to 7.64) · 1,594 casesNo differentJul 2022 – Jun 2024
Postoperative wound dehiscence rateComplications and deaths1.82 (0.4 to 3.24) · 685 casesNo differentJul 2022 – Jun 2024
Rate of complications for hip/knee replacement patientsComplications and deaths3.9 · 615 casesNoneApr 2023 – Mar 2025
SSI - Abdominal HysterectomyInfections1.88No differentOct 2024 – Sep 2025
Acute Myocardial Infarction (AMI) 30-Day Readmission RateUnplanned return visits14.7 · 93 casesNoneJul 2023 – Jun 2025
Heart failure (HF) 30-Day Readmission RateUnplanned return visits19.9 · 729 casesNoneJul 2023 – Jun 2025
Hospital return days for heart attack patientsUnplanned return visits-30.1 · 91 casesNoneJul 2022 – Jun 2025
Hospital return days for heart failure patientsUnplanned return visits-13 · 736 casesNoneJul 2022 – Jun 2025
Hospital return days for pneumonia patientsUnplanned return visits34.8 · 842 casesNoneJul 2022 – Jun 2025
Pneumonia (PN) 30-Day Readmission RateUnplanned return visits16.7 · 818 casesNoneJul 2023 – Jun 2025
Rate of emergency department (ED) visits for patients receiving outpatient chemotherapyUnplanned return visits5.3 (3.3 to 8.4) · 28 casesNo differentJan 2024 – Dec 2024
Rate of inpatient admissions for patients receiving outpatient chemotherapyUnplanned return visits10.8 (7.2 to 15.5) · 28 casesNo differentJan 2024 – Dec 2024
Rate of readmission after hip/knee replacementUnplanned return visits4.9 · 584 casesNoneJul 2023 – Jun 2025
Rate of readmission for chronic obstructive pulmonary disease (COPD) patientsUnplanned return visits20.4 · 139 casesNoneJul 2023 – Jun 2025
Rate of unplanned hospital visits after colonoscopy (per 1,000 colonoscopies)Unplanned return visits13.2 (9.9 to 17.9) · 222 casesNo differentJan 2022 – Dec 2024
Ratio of unplanned hospital visits after hospital outpatient surgeryUnplanned return visits1.1 (0.8 to 1.5) · 321 casesNo differentJan 2024 – Dec 2024

What patients said (758 patients answered, 24% of those asked)

Patient survey stars by topic at John Muir Medical Center - Walnut Creek Campus
Cleanliness3
Nurse communication3
Doctor communication3
Communication about medicines2
Discharge information4
Overall hospital rating3
Quietness3
Recommend hospital4
Share of patients giving the best answer at John Muir Medical Center - Walnut Creek Campus
Room was "always" clean65%
Nurses "always" communicated well75%
Doctors "always" communicated well76%
Staff "always" explained55%
Yes, staff "did" give patients this information87%
Yes, staff "did" give patients information about help after discharge87%
Doctors "always" explained things so they could understand70%
Doctors "always" listened carefully75%
Doctors "always" treated them with courtesy and respect82%
Patients who gave a rating of "9" or "10" (high)69%
Staff "always" explained new medications68%
Nurses "always" explained things so they could understand71%
Nurses "always" listened carefully72%
Nurses "always" treated them with courtesy and respect83%
"Always" quiet at night53%
"YES", patients would definitely recommend the hospital77%
Staff "always" explained possible side effects42%
Yes, staff "did" give patients information about possible symptoms87%

Original Medicare doctor bills

$45,350

Medicare paid this office $45,350 for 197 people.

This is what Medicare paid the clinician — not Medicare Advantage, and not the pharmacy.

Largest Original Medicare bills
Anesthesia for procedure for total knee joint replacement15$4,480$299
Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope28$3,535$126
Anesthesia for procedure on gallbladder, pancreas, or liver using an endoscope14$2,677$191
Anesthesia for other closed procedure on chest11$2,147$195

Who their Medicare patients are

197 Original Medicare patients in 2024. Average age 77 · Women 54% · Also on Medicaid 20% · Health risk score 1.72. Above the middle of the specialty; the typical anesthesiology clinician is at 1.54.

Conditions among them: High blood pressure 75% · Chronic kidney disease 39% · Diabetes 37% · Coronary heart disease 37% · Atrial fibrillation 29% · Cancer 27% · Heart failure 26% · Depression 24% · COPD 22% · Stroke 20% · Dementia 10%.

The office billed $549,652, Medicare allowed $56,861 and paid $45,350; for 216 services of 51 kinds.

Original Medicare patients only. A risk score of 1.0 is the average Medicare patient; higher means sicker. Any count under 11 is hidden.

Year by year

Original Medicare by year
2024197216771.72$549,652$45,350
2023197217771.63$488,548$42,878
2022309362731.30$878,958$61,670
2021289316741.32$736,441$51,882
2020174218741.90$535,629$38,122
20197195741.65$226,643$15,719

Original Medicare only. A service billed for fewer than 11 people in a year is hidden, so the lines can add up to less than the year's total.

See the services billed each year

2023: 5 services

Original Medicare services billed in 2023
Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope29$3,981$137
Anesthesia for other procedure on upper abdomen11$3,770$343
Anesthesia for lens surgery20$2,345$117
Anesthesia for other procedure on large bowel using an endoscope12$1,575$131
Insertion of artery tube for blood sampling or infusion through skin11$414$38

2022: 7 services

Original Medicare services billed in 2022
Anesthesia for lens surgery41$5,348$127
Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope40$5,121$128
Anesthesia for other procedure on large bowel using an endoscope38$5,110$134
Anesthesia for procedure on small and large bowel using an endoscope21$3,134$149
Anesthesia for exam of colon using an endoscope18$2,052$114
Insertion of artery tube for blood sampling or infusion through skin16$642$38
Ultrasonic guidance for needle placement11$300$27

2021: 6 services

Original Medicare services billed in 2021
Anesthesia for lens surgery66$8,697$128
Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope27$3,679$136
Anesthesia for other procedure on large bowel using an endoscope25$3,449$138
Anesthesia for procedure on small and large bowel using an endoscope21$3,009$143
Anesthesia for exam of colon using an endoscope15$1,675$112
Anesthesia for other procedure on skin of arms, legs, and front body11$1,613$147

2020: 4 services

Original Medicare services billed in 2020
Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope17$2,400$141
Anesthesia for other procedure on large bowel using an endoscope16$2,257$141
Anesthesia for lens surgery12$1,666$139
Insertion of artery tube for blood sampling or infusion through skin16$628$39

Money from drug and device companies

$49 in 2021

Industry payments by year
202111None$49
202012None$70
201911None$77

Paid work is consulting, speaking, honoraria and royalties, as opposed to meals and travel.

A payment is not proof that care is biased.

Payments by company
Acacia PharmaBarhemsys$49
1 payment
  • Meals for Barhemsys · 2021-08-09 · $49
See the published payment
Every published payment
Acacia PharmaMeals · 2021-08-09Barhemsys$49
See earlier years (2020, 2019)

2020: $70

Payments by company in 2020
Avanos MedicalOn-Q* Pump and Accessories$70
2 payments
  • Meals for On-Q* Pump and Accessories · 2020-02-22 · $12
  • Meals for On-Q* Pump and Accessories · 2020-01-08 · $58

2019: $77

Payments by company in 2019
Avanos MedicalOn-Q* Pump and Accessories$77
1 payment
  • Meals for On-Q* Pump and Accessories · 2019-10-31 · $77

Professional record

NPI
1962862052
Licence
CA 141073California A141073: Current · expires 2028-03-31
Trained
Tulane University School of Medicine, 2014
Group
Cep America - Anesthesia PC · G2 Anesthesia PC · John Muir Trauma Physicians Billing Service
Gender
Male
More record details
Sole proprietor
No
Taxonomy
Federal specialty code 207L00000X (207L00000X)
Mailing address
2401 S Hacienda Blvd, Apt 342, Hacienda Heights, CA, 91745
NPI first listed
2016-03-02
NPI last updated
2016-03-02

This is when the NPI record was last certified, not a medical board exam.